Portal:Philosophy

The Philosophy Portal A portal for Wikipedia's philosophy resources • 18,384 articles in English The Thinker, a statue by Auguste Rodin, is often used to represent philosophy. Left to right: Plato, Kant, Nietzsche, Buddha, Confucius, Averroes Philosophy ('love of wisdom' in Ancient Greek) is a systematic study of general and fundamental questions concerning topics like existence, reason, knowledge, value, mind, and language. It is a rational and critical inquiry that reflects on its own methods and assumptions. Historically, many of the individual sciences, such as physics and psychology, formed part of philosophy. However, they are considered separate academic disciplines in the modern sense of the term. Influential traditions in the history of philosophy include Western, Arabic–Persian, Indian, and Chinese philosophy. Western philosophy originated in Ancient Greece and covers a wide area of philosophical subfields. A central topic in Arabic–Persian philosophy is the relation between reason and revelation. Indian philosophy combines the spiritual problem of how to reach enlightenment with the exploration of the nature of reality and the ways of arriving at knowledge. Chinese philosophy focuses principally on practical issues in relation to right social conduct, government, and self-cultivation. Major branches of philosophy are epistemology, ethics, logic, and metaphysics. Epistemology studies what knowledge is and how to acquire it. Ethics investigates moral principles and what constitutes right conduct. Logic is the study of correct reasoning and explores how good arguments can be distinguished from bad ones. Metaphysics examines the most general features of reality, existence, objects, and properties. Other subfields are aesthetics, philosophy of language, philosophy of mind, philosophy of religion, philosophy of science, philosophy of mathematics, philosophy of history, and political philosophy. Within each branch, there are competing schools of philosophy that promote different principles, theories, or methods. Philosophers use a great variety of methods to arrive at philosophical knowledge. They include conceptual analysis, reliance on common sense and intuitions, use of thought experiments, analysis of ordinary language, description of experience, and critical questioning. Philosophy is related to many other fields, including the sciences, mathematics, business, law, and journalism. It provides an interdisciplinary perspective and studies the scope and fundamental concepts of these fields. It also investigates their methods and ethical implications. (Full article...) Featured articles - Featured articles are displayed here, which represent some of the best content on English Wikipedia. Why Marx Was Right is a 2011 non-fiction book by the British academic Terry Eagleton about the 19th-century philosopher Karl Marx and the schools of thought, collectively known as Marxism, that arose from his work. Written for laypeople, Why Marx Was Right outlines ten objections to Marxism that they may hold and aims to refute each one in turn. These include arguments that Marxism is irrelevant owing to changing social classes in the modern world, that it is deterministic and utopian, and that Marxists oppose all reforms and believe in an authoritarian state. In his counterarguments, Eagleton explains how class struggle is central to Marxism, and that history is seen as a progression of modes of production, like feudalism and capitalism, involving the materials, technology and social relations required to produce goods and services within the society. Under a capitalist economy, the working class, known as the proletariat, are those lacking significant autonomy over their labour conditions, and have no control over the means of production. Eagleton describes how revolutions could lead to a new mode of production—socialism—in which the working class have control, and an eventual communist society could make the state obsolete. He explores the failures of the Soviet Union and other Marxist–Leninist countries. (Full article...) Eric Alfred Havelock (/ˈhævlɒk/; 3 June 1903 – 4 April 1988) was a British classicist who spent most of his life in Canada and the United States. He was a professor at the University of Toronto and was active in the Canadian socialist movement during the 1930s. In the 1960s and 1970s, he served as chair of the classics departments at both Harvard and Yale. Although he was trained in the turn-of-the-20th-century Oxbridge tradition of classical studies, which saw Greek intellectual history as an unbroken chain of related ideas, Havelock broke radically with his own teachers and proposed an entirely new model for understanding the classical world, based on a sharp division between literature of the 6th and 5th centuries BC on the one hand, and that of the 4th on the other. Much of Havelock's work was devoted to addressing a single thesis: that all of Western thought is informed by a profound shift in the kinds of ideas available to the human mind at the point that Greek philosophy converted from an oral to a literate form. The idea has been controversial in classical studies, and has been rejected outright both by many of Havelock's contemporaries and modern classicists. Havelock and his ideas have nonetheless had far-reaching influence, both in classical studies and other academic areas. He and Walter J. Ong (who was himself strongly influenced by Havelock) essentially founded the field that studies transitions from orality to literacy, and Havelock has been one of the most frequently cited theorists in that field; as an account of communication, his work profoundly affected the media theories of Harold Innis and Marshall McLuhan. Havelock's influence has spread beyond the study of the classical world to that of analogous transitions in other times and places. (Full article...) Title page from the first English edition of Part I The Age of Reason; Being an Investigation of True and Fabulous Theology is a work by English and American political activist Thomas Paine, arguing for the philosophical position of deism. It follows in the tradition of 18th-century British deism, and challenges institutionalized religion and the legitimacy of the Bible. It was published in three parts in 1794, 1795, and 1807. It was a best-seller in the United States, where it caused a deistic revival. British audiences, fearing increased political radicalism as a result of the French Revolution, received it with more hostility. The Age of Reason presents common deistic arguments; for example, it highlights what Paine saw as corruption of the Christian Church and criticizes its efforts to acquire political power. Paine advocates reason in the place of revelation, leading him to reject miracles and to view the Bible as an ordinary piece of literature, rather than a divinely-inspired text. In The Age of Reason, he promotes natural religion and argues for the existence of a creator god. (Full article...) Icon of St. Maximus Maximus the Confessor (Greek: Μάξιμος ὁ Ὁμολογητής, romanized: Maximos ho Homologētēs), also spelled Maximos, otherwise known as Maximus the Theologian and Maximus of Constantinople (c. 580 – 13 August 662), was a Christian monk, theologian, and scholar. In his early life, Maximus was a civil servant, and an aide to the Byzantine Emperor Heraclius. He gave up this life in the political sphere to enter the monastic life. Maximus had studied diverse schools of philosophy, and certainly what was common for his time, the Platonic dialogues, the works of Aristotle, and numerous later Platonic commentators on Aristotle and Plato, like Plotinus, Porphyry, Iamblichus, and Proclus. When one of his friends began espousing the Christological position known as Monothelitism, Maximus was drawn into the controversy, in which he supported an interpretation of the Chalcedonian formula on the basis of which it was asserted that Jesus had both a human and a divine will. Maximus is venerated in both the Catholic and Eastern Orthodox Churches. He was eventually persecuted for his Christological positions; following a trial, his tongue and right hand were mutilated. (Full article...) Portrait c. 1550 John Calvin (/ˈkælvɪn/; Middle French: Jehan Cauvin; French: Jean Calvin [ʒɑ̃ kalvɛ̃]; 10 July 1509 – 27 May 1564) was a French theologian, pastor and reformer in Geneva during the Protestant Reformation. He was a principal figure in the development of the system of Christian theology later called Calvinism, including its doctrines of predestination and of God's absolute sovereignty in the salvation of the human soul from death and eternal damnation. Calvinist doctrines were influenced by and elaborated upon the Augustinian and other Christian traditions. Various Congregational, Reformed and Presbyterian churches, which look to Calvin as the chief expositor of their beliefs, have spread throughout the world. Calvin was a tireless polemicist and apologetic writer who generated much controversy. He also exchanged cordial and supportive letters with many reformers, including Philipp Melanchthon and Heinrich Bullinger. In addition to his seminal Institutes of the Christian Religion, Calvin wrote commentaries on most books of the Bible, confessional documents, and various other theological treatises. (Full article...) Archimedes Thoughtful by Domenico Fetti (1620) Archimedes of Syracuse (/ˌɑːrkɪˈmiːdiːz/ AR-kim-EE-deez; c. 287 – c. 212 BC) was an Ancient Greek mathematician, physicist, engineer, astronomer, and inventor from the ancient city of Syracuse in Sicily. Although few details of his life are known, he is regarded as one of the leading scientists in classical antiquity. Regarded as the greatest mathematician of ancient history, and one of the greatest of all time, Archimedes anticipated modern calculus and analysis by applying the concept of the infinitely small and the method of exhaustion to derive and rigorously prove a range of geometrical theorems. These include the area of a circle, the surface area and volume of a sphere, the area of an ellipse, the area under a parabola, the volume of a segment of a paraboloid of revolution, the volume of a segment of a hyperboloid of revolution, and the area of a spiral. Archimedes' other mathematical achievements include deriving an approximation of pi (π), defining and investigating the Archimedean spiral, and devising a system using exponentiation for expressing very large numbers. He was also one of the first to apply mathematics to physical phenomena, working on statics and hydrostatics. Archimedes' achievements in this area include a proof of the law of the lever, the widespread use of the concept of center of gravity, and the enunciation of the law of buoyancy known as Archimedes' principle. He is also credited with designing innovative machines, such as his screw pump, compound pulleys, and defensive war machines to protect his native Syracuse from invasion. (Full article...) Bohr in 1922 Niels Henrik David Bohr (Danish: [ˈne̝ls ˈpoɐ̯ˀ]; 7 October 1885 – 18 November 1962) was a Danish physicist who made foundational contributions to understanding atomic structure and quantum theory, for which he received the Nobel Prize in Physics in 1922. Bohr was also a philosopher and a promoter of scientific research. Bohr developed the Bohr model of the atom, in which he proposed that energy levels of electrons are discrete and that the electrons revolve in stable orbits around the atomic nucleus but can jump from one energy level (or orbit) to another. Although the Bohr model has been supplanted by other models, its underlying principles remain valid. He conceived the principle of complementarity: that items could be separately analysed in terms of contradictory properties, like behaving as a wave or a stream of particles. The notion of complementarity dominated Bohr's thinking in both science and philosophy. (Full article...) Cover of the first edition The Fountainhead is a 1943 novel by Russian-American author Ayn Rand, her first major literary success. The novel's protagonist, Howard Roark, is an intransigent young architect who battles against conventional standards and refuses to compromise with an architectural establishment unwilling to accept innovation. Roark embodies what Rand believed to be the ideal man, and his struggle reflects Rand's belief that individualism is superior to collectivism. Roark is opposed by what he calls "second-handers", who value conformity over independence and integrity. These include Roark's former classmate, Peter Keating, who succeeds by following popular styles but turns to Roark for help with design problems. Ellsworth Toohey, a socialist architecture critic who uses his influence to promote his political and social agenda, tries to destroy Roark's career. Tabloid newspaper publisher Gail Wynand seeks to shape popular opinion; he befriends Roark, then betrays him when public opinion turns in a direction he cannot control. The novel's most controversial character is Roark's lover, Dominique Francon. She believes that non-conformity has no chance of winning, so she alternates between helping Roark and working to undermine him. (Full article...) Lenin in 1920 Vladimir Ilyich Ulyanov (22 April [O.S. 10 April] 1870 – 21 January 1924), better known as Vladimir Lenin, was a Russian revolutionary, politician and political theorist who was the founder and first head of government of Soviet Russia from 1917 until his death in 1924, and of the Soviet Union from 1922 until his death. The founder and leader of the Bolsheviks, Lenin led the October Revolution which established the world's first socialist state. His government won the Russian Civil War and consolidated power in a one-party state under the Communist Party. Ideologically a Marxist, his developments to the ideology are called Leninism. Born into a middle-class family in Simbirsk, Lenin embraced revolutionary socialist politics following his brother's 1887 execution. Expelled from Kazan Imperial University for participating in protests against the Tsarist government, he devoted the following years to a law degree before relocating to Saint Petersburg in 1893 and becoming a prominent Marxist activist. In 1897, Lenin was arrested for sedition and exiled to Siberia for three years. He then moved to Western Europe, where he became a key figure in the Marxist Russian Social Democratic Labour Party. In the party's 1903 schism, he led his Bolshevik faction against Julius Martov's Mensheviks. Lenin briefly returned to Russia during the failed Revolution of 1905, and during the First World War campaigned for its transformation into a Europe-wide proletarian revolution, which, as a Marxist, he believed would cause the end of capitalism and the rise of socialism. After the February Revolution of 1917 ousted Tsar Nicholas II and established a Provisional Government, Lenin returned to Russia and played a leading role in the October Revolution, in which the Bolsheviks overthrew the regime. (Full article...) Title page from the second edition of A Vindication of the Rights of Men, the first to carry Wollstonecraft's name A Vindication of the Rights of Men, in a Letter to the Right Honourable Edmund Burke; Occasioned by His Reflections on the Revolution in France (1790) is a political pamphlet, written by the 18th-century British writer and women's rights advocate Mary Wollstonecraft, which attacks aristocracy and advocates republicanism. Wollstonecraft's was the first response in a pamphlet war sparked by the publication of Edmund Burke's Reflections on the Revolution in France (1790), a defense of constitutional monarchy, aristocracy, and the Church of England. Wollstonecraft attacked not only hereditary privilege, but also the rhetoric that Burke used to defend it. Most of Burke's detractors deplored what they viewed as his theatrical pity for Marie Antoinette, but Wollstonecraft was unique in her love of Burke's gendered language. By saying the sublime and the beautiful, terms first established by Burke himself in A Philosophical Enquiry into the Origin of Our Ideas of the Sublime and Beautiful (1756), she kept his rhetoric as well as his argument. In her first unabashedly feminist critique, which Wollstonecraft scholar Claudia Johnson describes as unsurpassed in its argumentative force, Wollstonecraft indicts Burke's justification of an equal society founded on the passivity of women. (Full article...) Portrait by Joshua Reynolds, c. 1772 Samuel Johnson (18 September [O.S. 7 September] 1709 – 13 December 1784), often called Dr Johnson, was an English writer who made lasting contributions as a poet, playwright, essayist, moralist, literary critic, sermonist, biographer, editor, and lexicographer. The Oxford Dictionary of National Biography calls him "arguably the most distinguished man of letters in English history". Born in Lichfield, Staffordshire, he attended Pembroke College, Oxford, until lack of funds forced him to leave. After working as a teacher, he moved to London and began writing for The Gentleman's Magazine. Early works include Life of Mr Richard Savage, the poems London and The Vanity of Human Wishes and the play Irene. After nine years' effort, Johnson's A Dictionary of the English Language appeared in 1755, and was acclaimed as "one of the greatest single achievements of scholarship". Later work included essays, an annotated The Plays of William Shakespeare, and the apologue The History of Rasselas, Prince of Abissinia. In 1763 he befriended James Boswell, with whom he travelled to Scotland, as Johnson described in A Journey to the Western Islands of Scotland. Near the end of his life came a massive, influential Lives of the Most Eminent English Poets of the 17th and 18th centuries. (Full article...) The problem of religious language considers whether it is possible to talk about God meaningfully if the traditional conceptions of God as being incorporeal, infinite, and timeless, are accepted. Because these traditional conceptions of God make it difficult to describe God, religious language has the potential to be meaningless. Theories of religious language either attempt to demonstrate that such language is meaningless, or attempt to show how religious language can still be meaningful. One prevalent position in Islamic philosophy holds that religious language is meaningful and positive, demonstrating the shared attributes of God and His creatures. According to this view, the semantic commonality of attributes between God and humans indicates ontological commonalities between them. This is because factual concepts refer to and are abstracted from realities in the external world. (Full article...) Du Bois in 1907 William Edward Burghardt Du Bois (/duːˈbɔɪs/ doo-BOYSS; February 23, 1868 – August 27, 1963) was an American sociologist, socialist, historian, and Pan-Africanist civil rights activist. Born in Great Barrington, Massachusetts, Du Bois grew up in a relatively tolerant and integrated community. After completing graduate work at the Friedrich Wilhelm University in Berlin and Harvard University, where he was its first African American to earn a doctorate, Du Bois rose to national prominence as a leader of the Niagara Movement, a group of black civil rights activists seeking equal rights. Du Bois and his supporters opposed the Atlanta Compromise. Instead, Du Bois insisted on full civil rights and increased political representation, which he believed would be brought about by the African-American intellectual elite. He referred to this group as the talented tenth, a concept under the umbrella of racial uplift, and believed that African Americans needed the chances for advanced education to develop its leadership. (Full article...) Portrait of Priestley, 1801 Joseph Priestley FRS (/ˈpriːstli/; 24 March 1733 – 6 February 1804) was an English chemist, Unitarian, natural philosopher, separatist theologian, grammarian, multi-subject educator and classical liberal political theorist. He published over 150 works, and conducted experiments in several areas of science. Priestley is credited with his independent discovery of oxygen by the thermal decomposition of mercuric oxide, having isolated it in 1774. During his lifetime, Priestley's considerable scientific reputation rested on his invention of carbonated water, his writings on electricity, and his discovery of several "airs" (gases), the most famous being what Priestley dubbed "dephlogisticated air" (oxygen). Priestley's determination to defend phlogiston theory and to reject what would become the chemical revolution eventually left him isolated within the scientific community. (Full article...) Portrait of Rădulescu, by Mișu Popp Ion Heliade Rădulescu or Ion Heliade (also known as Eliade or Eliade Rădulescu; Romanian pronunciation: [ˈi.on heliˈade rəduˈlesku]; 6 January 1802 – 27 April 1872) was a Wallachian, later Romanian academic, Romantic and Classicist poet, essayist, memoirist, short story writer, newspaper editor and politician. A prolific translator of foreign literature into Romanian, he was also the author of books on linguistics and history. For much of his life, Heliade Rădulescu was a teacher at Saint Sava College in Bucharest, which he helped reopen. He was a founding member and first president of the Romanian Academy. Heliade Rădulescu is considered one of the foremost champions of Romanian culture from the first half of the 19th century, having first risen to prominence through his association with Gheorghe Lazăr and his support of Lazăr's drive for discontinuing education in Greek. Over the following decades, he had a major role in shaping the modern Romanian language, but caused controversy when he advocated the massive introduction of Italian neologisms into the Romanian lexis. A Romantic nationalist landowner siding with moderate liberals, Heliade was among the leaders of the 1848 Wallachian revolution, after which he was forced to spend several years in exile. Adopting an original form of conservatism, which emphasized the role of the aristocratic boyars in Romanian history, he was rewarded for supporting the Ottoman Empire and clashed with the radical wing of the 1848 revolutionaries. (Full article...) Did you know (auto-generated) - ... that the book Working from Within details how W. V. Quine only began to use the term "naturalism" years after he had already developed the key tenets of the philosophy? ... that E. Graham Howe "introduced Eastern philosophy to psychotherapy in England"? ... that diverse fields study the mind, including psychology, neuroscience, cognitive science, and philosophy? ... that the barracks at the Xifeng concentration camp were named for Confucian tenets such as righteousness and filial piety? ... that physics, chemistry, and biology were all part of philosophy before they became separate disciplines? ... that in his book How to Be Perfect, Michael Schur sought to "wade into some deeply confusing and painful applications of moral philosophy ... but in a fun way"? ... that the Correspondence of Paul and Seneca was cited in the Middle Ages to claim that Seneca, a Roman philosopher of Stoicism, had converted to Christianity? ... that artist Tove Jansson based the children's book character Snufkin on a political philosopher whom she had dated? Selected philosopher of the week Ayn Rand was a Russian-born American novelist and philosopher best known for developing Objectivism and for writing the novels We the Living, The Fountainhead, Atlas Shrugged, and the novella Anthem. A broadly influential figure in post-WWII America, her work attracted both enthusiastic admiration and scathing denunciations. Rand's writing emphasizes the philosophic concepts of objective reality, reason, rational egoism, and laissez-faire capitalism, while attacking what she saw as the irrationality and immorality of altruism, collectivism, and communism. She believed that people must choose their values and actions by reason; that the individual has a right to exist for his or her own sake, neither sacrificing self to others nor others to self; and that no one has the right to take what belongs to others by physical force or fraud, or impose their moral code on others by physical force. Her politics have been described as minarchism and libertarianism, though she never used the first term and detested the second. ...Archive Read more... Selected article of the week Normative ethics is the branch of the philosophical study of ethics concerned with classifying actions as right and wrong, as opposed to descriptive ethics. Normative ethics regards ethics as a set of norms related to actions. Descriptive ethics deal with what the population believes to be right and wrong, while normative ethics deal with what the population should believe to be right and wrong. Moreover, because it examines standards for the rightness and wrongness of actions, normative ethics is distinct from meta-ethics, which studies the nature of moral statements, and from applied ethics, which places normative rules in practical contexts. ...Archive/schedule Read more... Good articles - These are Good articles, which meet a core set of high editorial standards. The Upanishads (/ʊˈpʌnɪʃədz/; Sanskrit: उपनिषद्, IAST: Upaniṣad, pronounced [ˈʊpɐnɪʂɐd]) are late Vedic and post-Vedic Sanskrit texts that "document the transition from the archaic ritualism of the Veda into new religious ideas and institutions" and the emergence of the central religious concepts of Hinduism. They are the most recent addition to the Vedas -- the oldest scriptures of Hinduism, and deal with meditation, philosophy, consciousness, and ontological knowledge. Earlier parts of the Vedas dealt with mantras, benedictions, rituals, ceremonies, and sacrifices. While among the most important literature in the history of Indian religions and culture, the Upanishads document a wide variety of "rites, incantations, and esoteric knowledge" departing from Vedic ritualism and interpreted in various ways in the later commentarial traditions. The Upanishads are widely known, and their diverse ideas, interpreted in various ways, informed later traditions of Hinduism. The central concern of all Upanishads is to discover the relations between ritual, cosmic realities (including gods), and the human body/person, postulating Ātman and Brahman as the "summit of the hierarchically arranged and interconnected universe", but various ideas about the relation between Atman and Brahman can be found. (Full article...) Jain temples on Shatrunjaya hill near Palitana, Gujarat Jainism (/ˈdʒeɪnɪzəm/ JAY-niz-əm), also known as Jain Dharma, is an Indian religion. Jainism traces its spiritual ideas and history through the succession of twenty-four tirthankaras (supreme preachers of Dharma), with the first in the current time cycle being Rishabhadeva, whom the tradition holds to have lived millions of years ago, the twenty-third tirthankara Parshvanatha, whom historians date to the 9th century BCE, and the twenty-fourth tirthankara Mahavira, around 600 BCE. Jainism is considered an eternal dharma with the tirthankaras guiding every time cycle of the cosmology. Central to understanding Jain philosophy is the concept of bhedvigyān, or the clear distinction in the nature of the soul and non-soul entities. This principle underscores the innate purity and potential for liberation within every soul, distinct from the physical and mental elements that bind it to the cycle of birth and rebirth. Recognizing and internalizing this separation is essential for spiritual progress and the attainment of samyak darshan or self realization, which marks the beginning of the aspirant's journey towards liberation. The three main pillars of Jainism are ahiṃsā (non-violence), anekāntavāda (non-absolutism), and aparigraha (asceticism). Jain monks take five main vows: ahiṃsā (non-violence), satya (truth), asteya (not stealing), brahmacharya (chastity), and aparigraha (non-possessiveness). These principles have affected Jain culture in many ways, such as leading to a predominantly lacto-vegetarian lifestyle. Parasparopagraho jīvānām (the function of souls is to help one another) is the faith's motto, and the Namokar Mantra is its most common and strongest prayer. (Full article...) Rothbard in the 1970s Murray Newton Rothbard (/ˈrɒθbɑːrd/; March 2, 1926 – January 7, 1995) was an American economist of the Austrian School, economic historian, political theorist, and activist. Rothbard was a central figure in the 20th-century American libertarian movement, particularly its right-wing strands, and was a founder and leading theoretician of anarcho-capitalism. He wrote over twenty books on political theory, history, economics, and other subjects. Rothbard argued that all services provided by the "monopoly system of the corporate state" could be provided more efficiently by the private sector and wrote that the state is "the organization of robbery systematized and writ large". He called fractional-reserve banking a form of fraud and opposed central banking. He categorically opposed all military, political, and economic interventionism in the affairs of other nations. (Full article...) The Bhikshuka Upanishad describes Hindu mendicants who seek spiritual liberation through the practise of yoga The Bhikshuka Upanishad (Sanskrit: भिक्षुक उपनिषत्, IAST: Bhikṣuka Upaniṣad), also known as Bhikshukopanishad, is one of the minor Upanishads of Hinduism and is written in Sanskrit. The Upanishad describes four kinds of sannyasins (Hindu monks), their eating habits and lifestyle. Yoga is the path of spiritual liberation for all four. Of these, the Paramahamsa monks are discussed in this text at greater length, and described as loners who are patient with everyone, free from dualism in their thoughts, and who meditate on their soul and the Brahman. (Full article...) Vishnu in a boar (Varaha) avatar rescues Bhudevi (earth) Varaha Upanishad (Sanskrit: वराह उपनिषद्, "boar") is a minor Upanishad of Hinduism composed between the 13th and 16th centuries CE. Composed in Sanskrit, it is listed as one of the 32 Krishna Yajurveda Upanishads, and classified as one of 20 Yoga Upanishads. The text has five chapters, structured primarily as a discussion between Vishnu in his Varaha (boar) avatar and the sage Ribhu. The discussion covers the subjects of Tattvas, the nature and relationship between the individual soul (Self, Atman) and the Ultimate Reality (Brahman), the seven stages of learning, the characteristics of Jivanmukti (inner sense of freedom while living), and the four types of Jivanmuktas (liberated persons). The last chapter of the text is dedicated to Yoga, its goals and methods. (Full article...) Bust of Pythagoras of Samos in the Capitoline Museums, Rome Pythagoras of Samos (Ancient Greek: Πυθαγόρας; c. 570 – c. 495 BC) was an ancient Ionian Greek philosopher, polymath, and the eponymous founder of Pythagoreanism. His political and religious teachings were well known in Magna Graecia and influenced the philosophies of Plato, Aristotle, and, through them, the West in general. Knowledge of his life is clouded by legend; modern scholars disagree regarding Pythagoras's education and influences, but they do agree that, around 530 BC, he travelled to Croton in southern Italy, where he founded a school in which initiates were sworn to secrecy and lived a communal, ascetic lifestyle. In antiquity, Pythagoras was credited with many mathematical and scientific discoveries, including the Pythagorean theorem, Pythagorean tuning, the five regular solids, the Theory of Proportions, the sphericity of the Earth, and the identity of the morning and evening stars as the planet Venus. It was said that he was the first man to call himself a philosopher ("lover of wisdom") and that he was the first to divide the globe into five climatic zones. Classical historians debate whether Pythagoras made these discoveries, and many of the accomplishments credited to him likely originated earlier or were made by his colleagues or successors. Some accounts mention that the philosophy associated with Pythagoras was related to mathematics and that numbers were important, but it is debated to what extent, if at all, he actually contributed to mathematics or natural philosophy. (Full article...) Marble bust, Musée Saint-Raymond Marcus Aurelius Antoninus (Latin: [ˈmaːrkʊs au̯ˈreːliʊs antoːˈniːnʊs]; English: /ɔːˈriːliəs/ or-EE-lee-əs; 26 April 121 – 17 March 180) was Roman emperor from 161 to 180 and a Stoic philosopher. He was a member of the Nerva–Antonine dynasty, the last of the rulers later known as the Five Good Emperors and the last emperor of the Pax Romana, an age of relative peace, calm, and stability for the Roman Empire lasting from 27 BC to 180 AD. He served as Roman consul in 140, 145, and 161. Marcus Aurelius was the son of the praetor Marcus Annius Verus and his wife, Domitia Calvilla. He was related through marriage to the emperors Trajan and Hadrian. Marcus was three when his father died, and was raised by his mother and paternal grandfather. After Hadrian's adoptive son, Aelius Caesar, died in 138, Hadrian adopted Marcus's uncle Antoninus Pius as his new heir. In turn, Antoninus adopted Marcus and Lucius, the son of Aelius. Hadrian died that year, and Antoninus became emperor. Now heir to the throne, Marcus studied Greek and Latin under tutors such as Herodes Atticus and Marcus Cornelius Fronto. He married Antoninus's daughter Faustina in 145. (Full article...) Speculative portrait by William Faithorne Lucian of Samosata (Λουκιανὸς ὁ Σαμοσατεύς, c. 125 – after 180) was a Hellenized Syrian satirist, rhetorician and pamphleteer who is best known for his characteristic tongue-in-cheek style, with which he frequently ridiculed superstition, religious practices, and belief in the paranormal. Although his native language was probably Syriac, all of his extant works are written entirely in ancient Greek (mostly in the Attic Greek dialect popular during the Second Sophistic period). Everything that is known about Lucian's life comes from his own writings, which are often difficult to interpret because of his extensive use of sarcasm. According to his oration The Dream, he was the son of a lower middle class family from the city of Samosata along the banks of the Euphrates in the remote Roman province of Syria. As a young man, he was apprenticed to his uncle to become a sculptor, but, after a failed attempt at sculpting, he ran away to pursue an education in Ionia. He may have become a travelling lecturer and visited universities throughout the Roman Empire. After acquiring fame and wealth through his teaching, Lucian finally settled down in Athens for a decade, during which he wrote most of his extant works. In his fifties, he may have been appointed as a highly paid government official in Egypt, after which point he disappears from the historical record. (Full article...) J. Hunter Guthrie in 1949 Joseph Hunter Guthrie SJ (January 8, 1901 – November 11, 1974) was an American academic philosopher, writer, Jesuit, and Catholic priest. Born in New York City, he entered the Society of Jesus in 1917, and began his studies at Woodstock College. Following his undergraduate and graduate work there, he taught at Jesuit institutions in the Philippines until 1927. Following his ordination in 1930, he received doctorates in theology and philosophy from the Pontifical Gregorian University and the University of Paris, respectively. He then returned to the United States, where he became a professor of philosophy at Woodstock College and Fordham University. In 1943, Guthrie became the chairman of graduate philosophy at Georgetown University and dean of the Graduate School of Arts and Sciences. In this role, he admitted the first women to the school on equal terms as men. For twenty years, he promoted the belief that intellectuals must play a central role in combatting the ideologies that led to World War II. To that end, he was a member of the drafting committee of the UNESCO charter, was a co-founder of an American academy of Catholic intellectuals, and travelled the world with the U.S. State Department, for which he received honors from several countries and organizations. (Full article...) Werner Erhard: The Transformation of a Man, The Founding of est is a biography of Werner Erhard by philosophy professor William Warren Bartley, III. The book was published in 1978 by Clarkson Potter. Bartley was a graduate of Erhard Seminars Training and served on its advisory board. Erhard wrote a foreword to the book. The book's structure describes Erhard's education, transformation, reconnection with his family, and the theories of the est training. The book went through five editions in its first year. Reviewers generally commented that the book was favorable to Erhard, and a number of critics felt that it was unduly so, or lacked objectivity, citing Bartley's close relationship to Erhard. Responses to the writing were mixed; while some reviewers found it well written and entertaining, others felt the tone was too slick, promotional, or hagiographic. (Full article...) The unity of the intellect thesis was proposed by Averroes, painted here by the 14th century artist Andrea Bonaiuto. The unity of the intellect (also called the unicity of the intellect or monopsychism), a philosophical theory proposed by the medieval Andalusian philosopher Averroes (1126–1198), asserted that all humans share the same intellect. Averroes expounded his theory in his long commentary on Aristotle's On the Soul to explain how universal knowledge is possible within the Aristotelian philosophy of mind. Averroes's theory was influenced by related ideas propounded by previous thinkers such as Aristotle himself, Plotinus, Al-Farabi, Avicenna (Ibn Sina) and Avempace (Ibn Bajja). Once Latin translations of Averroes's works became available in the 13th century, this theory was taken up and expanded by Averroists in the Christian West, such as Siger of Brabant (c. 1240 – c. 1284), John of Jandun (c. 1285 – 1328) and John Baconthorpe (c. 1290 – 1347). It also influenced the secularist political philosophy of Dante Alighieri (c. 1265 – 1321) in the fourteenth century. However, it was rejected by other philosophers—including Thomas Aquinas (1225 – 1274), who wrote a detailed critique—and Averroes received condemnation from Catholic Church authorities. In modern times, the theory is no longer seen as tenable; historian of philosophy Peter Adamson regards it as a product of Averroes's time. (Full article...) 1799 portrait Georg Philipp Friedrich Freiherr von Hardenberg (2 May 1772 – 25 March 1801), pen name Novalis (/noʊˈvɑːlɪs/; German: [noˈvaːlɪs]), was a German aristocrat and polymath, who was a poet, novelist, philosopher and mystic. He is regarded as an influential figure of Jena Romanticism. Novalis was born into a minor aristocratic family in Electoral Saxony. He was the second of eleven children; his early household observed a strict Pietist faith. He studied law at the University of Jena, the University of Leipzig, and the University of Wittenberg. While at Jena, he published his first poem and befriended the playwright and fellow poet Friedrich Schiller. In Leipzig, he then met Friedrich Schlegel, becoming lifelong friends. Novalis completed his law degree in 1794 at the age of 22. He then worked as a legal assistant in Tennstedt immediately after graduating. There, he met Sophie von Kühn. The following year Novalis and Sophie became secretly engaged. Sophie became severely ill soon after the engagement and died just after her 15th birthday. Sophie's early death had a life-long impact on Novalis and his writing. (Full article...) Historia animalium et al., Constantinople, 12th century (Biblioteca Medicea Laurenziana, pluteo 87.4) History of Animals (‹See Tfd›Greek: Τῶν περὶ τὰ ζῷα ἱστοριῶν, Ton peri ta zoia historion, "Inquiries on Animals"; Latin: Historia Animalium, "History of Animals") is one of the major texts on biology by the ancient Greek philosopher Aristotle, who had studied at Plato's Academy in Athens. It was written in the fourth century BC; Aristotle died in 322 BC. Generally seen as a pioneering work of zoology, Aristotle frames his text by explaining that he is investigating the what (the existing facts about animals) prior to establishing the why (the causes of these characteristics). The book is thus an attempt to apply philosophy to part of the natural world. Throughout the work, Aristotle seeks to identify differences, both between individuals and between groups. A group is established when it is seen that all members have the same set of distinguishing features; for example, that all birds have feathers, wings, and beaks. This relationship between the birds and their features is recognized as a universal. (Full article...) Chernyi, c. 1923 Pavel Dmitrievich Turchaninov (Russian: Па́вел Дми́триевич Турчани́нов, IPA: [ˈpavʲɪl ˈdmʲitrʲɪjɪvʲɪtɕ tʊrtɕɪˈnʲinəf]; 1878–1921), commonly known by his pseudonym Lev Chernyi (Russian: Лев Чёрный, IPA: [ˈlʲef ˈtɕɵrnɨj] ) was a Russian individualist anarchist. Having joined the anarchist movement during the Russian Revolution of 1905, during which he developed his individualist theory of "associational anarchism", Chernyi was arrested and exiled to Siberia for his revolutionary activities. After several escape attempts, one of which resulted in mutinous exiles capturing Turukhansk, he managed to flee to Paris, where he stayed until the Russian Revolution of 1917. After returning to Russia, he acted as secretary for the Moscow Federation of Anarchist Groups and organised the Black Guards, the federation's armed wing. As political repression against anarchists intensified after the Bolsheviks took power, Chernyi joined an underground anarchist group, which bombed a Russian Communist Party meeting. In 1921, Chernyi and Fanya Baron were arrested on charges of counterfeiting and were executed by shooting by the Cheka. (Full article...) Kantian ethics refers to a deontological ethical theory developed by German philosopher Immanuel Kant that is based on the notion that "I ought never to act except in such a way that I could also will that my maxim should become a universal law." It is also associated with the idea that "it is impossible to think of anything at all in the world, or indeed even beyond it, that could be considered good without limitation except a good will." The theory was developed in the context of Enlightenment rationalism. It states that an action can only be moral if it is motivated by a sense of duty, and its maxim may be rationally willed a universal, objective law. Central to Kant's theory of the moral law is the categorical imperative. Kant formulated the categorical imperative in various ways. His principle of universalizability requires that, for an action to be permissible, it must be possible to apply it to all people without a contradiction occurring. Kant's formulation of humanity, the second formulation of the categorical imperative, states that as an end in itself, humans are required never to treat others merely as a means to an end, but always as ends in themselves. The formulation of autonomy concludes that rational agents are bound to the moral law by their own will, while Kant's concept of the Kingdom of Ends requires that people act as if the principles of their actions establish a law for a hypothetical kingdom. (Full article...) General images - The following are images from various philosophy-related articles on Wikipedia. Portrait by Philippe de Champaigne, 17th century (from Medieval philosophy) Fukuzawa Yukichi (1862) a key civil rights activist and liberal thinker (from Eastern philosophy) Georg Wilhelm Friedrich Hegel, steel engraving, after 1828 (from Western philosophy) Confucius (from Eastern philosophy) Bronze statue of Giordano Bruno by Ettore Ferrari, Campo de' Fiori, Rome (from Western philosophy) Martin Heidegger (from Western philosophy) From left to right: Virchand Gandhi, Anagarika Dharmapala, Swami Vivekananda, G. Bonet Maury. Parliament of World Religions, 1893 (from Eastern philosophy) Saint Augustine. (from Western philosophy) Hu Shih and DT Suzuki during his visit to China in 1934 (from Eastern philosophy) Patricia Churchland, 2005 (from Western philosophy) Portrait of Immanuel Kant, c. 1790 (from Western philosophy) Map of Alexander the Great's empire and the route he and Pyrrho of Elis took to India (from Western philosophy) The Seven Sages of the Bamboo Grove, embroidery, 1860–1880 (from Eastern philosophy) Avicenna (from Medieval philosophy) Four Greek philosophers: Socrates, Antisthenes, Chrysippos, Epicurus; British Museum (from Ancient Greek philosophy) Xiong Shili circa 1960 (from Eastern philosophy) The Buddhist Nalanda university and monastery was a major center of learning in India from the 5th century CE to c. 1200. (from Eastern philosophy) Pyrrho of Elis, marble head, Roman copy, Archaeological Museum of Corfu (from Western philosophy) Søren Kierkegaard, sketch by Niels Christian Kierkegaard, c. 1840 (from Western philosophy) Bertrand Russell (from Western philosophy) Ferdinand de Saussure (from Western philosophy) Ionia, source of early Greek philosophy, in western Asia Minor (from Western philosophy) Edmund Husserl, in the 1910s (from Western philosophy) The philosopher Pyrrho of Elis, in an anecdote taken from Sextus Empiricus' Outlines of Pyrrhonism (upper)PIRRHO • HELIENSIS • PLISTARCHI • FILIVS translation (from Latin): Pyrrho • Greek • Son of Plistarchus (middle)OPORTERE • SAPIENTEM HANC ILLIVS IMITARI SECVRITATEMtranslation (from Latin): It is right wisdom then that all imitate this security (Pyrrho pointing at a peaceful pig munching his food) (lower)Whoever wants to apply the real wisdom, shall not mind trepidation and misery (from Ancient Greek philosophy) Gottfried Wilhelm Leibniz, 1695 (from Western philosophy) Valluvar, the Tamil philosopher of the post-Sangam era (from Eastern philosophy) Erasmus is Credited as the Prince of the Humanists (from Western philosophy) Abbo of Fleury (from Medieval philosophy) Portrait of David Hume, by Allan Ramsay, 1754 (from Western philosophy) Bust of Socrates, Roman copy after a Greek original from the 4th century BCE (from Western philosophy) St. Anselm of Canterbury is credited as the founder of scholasticism. (from Western philosophy) Adi Shankara (8th century CE) the main exponent of Advaita Vedānta (from Eastern philosophy) Sigmund Freud by Max Halberstadt, c. 1921 (from Western philosophy) Gottlob Frege, c. 1905 (from Western philosophy) Portrait of René Descartes, after Frans Hals, second half of 17th century (from Western philosophy) Aristotle in The School of Athens, by Raphael (from Western philosophy) Portrait of John Locke, by Sir Godfrey Kneller, 1697 (from Western philosophy) Friedrich Nietzsche, photograph by Friedrich Hartmann, c. 1875 (from Western philosophy) William James in 1906 (from Western philosophy) Selected pictures Friedrich Schiller (1759–1805) was a German poet, philosopher, physician, historian and playwright. Umberto Eco OMRI (1932–2016) was an Italian novelist, literary critic, philosopher, semiotician, and university professor. He is widely known for his 1980 novel Il nome della rosa (The Name of the Rose), a historical mystery combining semiotics in fiction with biblical analysis, medieval studies, and literary theory. Jane Addams (1860–1935) was an American settlement activist, reformer, social worker, sociologist, public administrator and author. She was a notable figure in the history of social work and women's suffrage in the United States and an advocate for world peace. Philosophy, an 1896 mural by Robert Lewis Reid in the North Corridor on the Second Floor of the Library of Congress Thomas Jefferson Building, Washington, D.C.. The caption underneath reads: "HOW CHARMING IS DIVINE PHILOSOPHY." Oscar Wilde reclining with Poems, by Napoleon Sarony, in New York in 1882. Wilde often liked to appear idle, though in fact he worked hard; by the late 1880s he was a father, an editor, and a writer. The House Builders (Portraits of Sir W.E. & The Hon. Lady Welby-Gregory), an 1880 painting by Frank Dicksee A statue of peripatetic philosopher and botanist Theophrastus at the Palermo Botanical Gardens. Painting of Gottfried Wilhelm Leibniz by Christoph Bernhard Francke, Braunschweig, Herzog Anton Ulrich Museum, 1700. Carl von Linné, Alexander Roslin, 1775 (oil on canvas, Gripsholm Castle). Linnaeus was a Swedish botanist, zoologist, and physician who formalised binomial nomenclature, the modern system of naming organisms. He is known as the "father of modern taxonomy". Leo Tolstoy in 1897. Count Lev Nikolayevich Tolstoy was a Russian writer who is regarded as one of the greatest authors of all time. Lady Dorothy Browne and Sir Thomas Browne is an oil on panel painting attributed to the English artist Joan Carlile, and probably completed between 1641 and 1650. The painting depicts English physician Thomas Browne and his wife Dorothy. The center third of Education (1890), a stained glass window by Louis Comfort Tiffany and Tiffany Studios, located in Linsly-Chittenden Hall at Yale University. It depicts Science (personified by Devotion, Labor, Truth, Research and Intuition) and Religion (personified by Purity, Faith, Hope, Reverence and Inspiration) in harmony, presided over by the central personification of "Light·Love·Life". Adam Smith (baptised 16 June 1723 – died 17 July 1790 [OS: 5 June 1723 – 17 July 1790]) was a Scottish moral philosopher and a pioneer of political economics. One of the key figures of the Scottish Enlightenment, Smith is the author of The Theory of Moral Sentiments and An Inquiry into the Nature and Causes of the Wealth of Nations. The latter, usually abbreviated as The Wealth of Nations, is considered his magnum opus and the first modern work of economics. Smith is widely cited as the father of modern economics. The statue of Immanuel Kant in front of the Immanuel Kant State University of Russia in Kaliningrad. The statue was made by notable sculptor Christian Daniel Rauch and unveiled in 1864. The statue was destroyed in 1945, but was remoulded in 1992 on the initiative of Marion Dönhoff. Niels Bohr (1885–1962) was a Danish physicist who made foundational contributions to understanding atomic structure and quantum theory, for which he received the Nobel Prize in Physics in 1922. Bohr was also a philosopher and a promoter of scientific research. Voltairine de Cleyre (1866–1912) was an American anarchist known for being a prolific writer and speaker who opposed state power, the capitalism she saw as interconnected with it, and marriage, and the domination of religion over sexuality and women's lives. She is often characterized as a major early feminist because of her views. Plato (left) and Aristotle (right), a detail of The School of Athens, a fresco by Raphael. Aristotle gestures to the earth, representing his belief in knowledge through empirical observation and experience, while holding a copy of his Nicomachean Ethics in his hand, whilst Plato gestures to the heavens, representing his belief in The Forms. Topics Glossary · Outline  · A–Z index  · Featured content Academic Branches of Philosophy Philosophy ponders the most fundamental questions humankind has been able to ask. These are increasingly numerous and over time they have been arranged into the overlapping branches of the philosophy tree: Aesthetics: What is art? What is beauty? Is there a standard of taste? Is art meaningful? If so, what does it mean? What is good art? Is art for the purpose of an end, or is "art for art's sake?" What connects us to art? How does art affect us? Is some art unethical? Can art corrupt or elevate societies? Epistemology: What are the nature and limits of knowledge? What is more fundamental to human existence, knowing (epistemology) or being (ontology)? How do we come to know what we know? What are the limits and scope of knowledge? How can we know that there are other minds (if we can)? How can we know that there is an external world (if we can)? How can we prove our answers? What is a true statement? Ethics: Is there a difference between ethically right and wrong actions (or values, or institutions)? If so, what is that difference? Which actions are right, and which wrong? Do divine commands make right acts right, or is their rightness based on something else? Are there standards of rightness that are absolute, or are all such standards relative to particular cultures? How should I live? What is happiness? Logic: What makes a good argument? How can I think critically about complicated arguments? What makes for good thinking? When can I say that something just does not make sense? Where is the origin of logic? Metaphysics: What sorts of things exist? What is the nature of those things? Do some things exist independently of our perception? What is the nature of space and time? What is the relationship of the mind to the body? What is it to be a person? What is it to be conscious? Do gods exist? Political philosophy: Are political institutions and their exercise of power justified? What is justice? Is there a 'proper' role and scope of government? Is democracy the best form of governance? Is governance ethically justifiable? Should a state be allowed? Should a state be able to promote the norms and values of a certain moral or religious doctrine? Are states allowed to go to war? Do states have duties against inhabitants of other states? 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