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75-490: Rationalist International is an organization with the stated aim to represent a rational view of the world. This article about an organisation in India is a stub . You can help Misplaced Pages by expanding it . This article related to atheism is a stub . You can help Misplaced Pages by expanding it . Atheism Atheism , in the broadest sense, is an absence of belief in the existence of deities . Less broadly, atheism

150-528: A spectrum of theistic probability —the likelihood that each assigns to the statement "God exists". Before the 18th century, the existence of God was so accepted in the Western world that even the possibility of true atheism was questioned. This is called theistic innatism —the notion that all people believe in God from birth; within this view was the connotation that atheists are in denial. Some atheists have challenged

225-476: A theistic naturalism . Nevertheless, Oppy argues that a strong naturalism favors atheism, though he finds the best direct arguments against theism to be the evidential problem of evil, and arguments concerning the contradictory nature of God were one to exist. Some atheists hold the view that the various conceptions of gods, such as the personal god of Christianity, are ascribed logically inconsistent qualities. Such atheists present deductive arguments against

300-405: A divine mandate is not true ethical behavior but merely blind obedience. Baggini argues that atheism is a superior basis for ethics, claiming that a moral basis external to religious imperatives is necessary to evaluate the morality of the imperatives themselves—to be able to discern, for example, that "thou shalt steal" is immoral even if one's religion instructs it—and that atheists, therefore, have

375-418: A god either leads to moral relativism and leaves one with no moral or ethical foundation, or renders life meaningless and miserable. Blaise Pascal argued this view in his Pensées . There is also a position claiming that atheists are quick to believe in God in times of crisis, that atheists make deathbed conversions , or that " there are no atheists in foxholes ". There have, however, been examples to

450-500: A label of practical godlessness was used at least as early as 1577. The term atheism was derived from the French athéisme , and appears in English about 1587. Atheism was first used to describe a self-avowed belief in late 18th-century Europe, specifically denoting disbelief in the monotheistic Abrahamic god . In the 20th century, globalization contributed to the expansion of

525-416: A lost Attic drama that featured Sisyphus , which has been attributed to both Critias and Euripides , claims that a clever man invented "the fear of the gods" in order to frighten people into behaving morally. Does then anyone say there are gods in heaven? There are not, there are not, if a man is willing not to give foolish credence to the ancient story. Consider for yourselves, don't form an opinion on

600-598: A means of explanation, and opposed arguments from religious authority . Other critics of religion and the Church during this time included Niccolò Machiavelli , Bonaventure des Périers , Michel de Montaigne , and François Rabelais . Historian Geoffrey Blainey wrote that the Reformation had paved the way for atheists by attacking the authority of the Catholic Church, which in turn "quietly inspired other thinkers to attack

675-478: A number of openly atheistic followers, such as atheistic or humanistic Judaism and Christian atheists . Atheism is accepted as a valid philosophical position within some varieties of Hinduism , Jainism , and Buddhism . Ideas that would be recognized today as atheistic are documented from the Vedic period and the classical antiquity . Atheistic schools are found in early Indian thought and have existed from

750-467: A persistent feature of political if not so much philosophical debate. Moral precepts such as "murder is wrong" are seen as divine laws , requiring a divine lawmaker and judge. However, many atheists argue that treating morality legalistically involves a false analogy , and that morality does not depend on a lawmaker in the same way that laws do. Philosophers Susan Neiman and Julian Baggini among others assert that behaving ethically only because of

825-424: A proposition; they instead place noncognitivism in its own category. Most atheists lean toward ontological monism : the belief that there is only one kind of fundamental substance. The philosophical materialism is a view that matter is the fundamental substance in nature. This omits the possibility of a non-material divine being. According to physicalism , only physical entities exist. Philosophies opposed to

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900-586: A punishable offense. During the Early Middle Ages , the Islamic world experienced a Golden Age . Along with advances in science and philosophy, Arab and Persian lands produced rationalists who were skeptical about revealed religion, such as Muhammad al Warraq (fl. 9th century), Ibn al-Rawandi (827–911), and Abu Bakr al-Razi ( c.  865 –925), as well as outspoken atheists such as al-Maʿarri (973–1058). Al-Ma'arri wrote and taught that religion itself

975-507: A reasonable expectation of public punishment. Although Voltaire is widely considered to have strongly contributed to atheistic thinking during the Revolution, he also considered fear of God to have discouraged further disorder, having said "If God did not exist, it would be necessary to invent him." The philosopher David Hume developed a skeptical epistemology grounded in empiricism , and Immanuel Kant 's philosophy has strongly questioned

1050-679: A short book explicating Gödel's incompleteness theorems to those not well trained in mathematical logic . He edited the Journal of Philosophy (1939–1956) and the Journal of Symbolic Logic (1940-1946). As a public intellectual, he supported a skeptical approach to claims of the paranormal , becoming one of the first sponsors and fellows of the Committee for Skeptical Inquiry in 1976, along with 24 other notable philosophers like W. V. Quine . The committee posthumously inducted him into their "Pantheon of Skeptics" in recognition of Nagel's contributions to

1125-482: Is a justified and rational true belief, but offers no extended epistemological justification because current theories are in a state of controversy. Martin instead argues for "mid-level principles of justification that are in accord with our ordinary and scientific rational practice." Other arguments for atheism that can be classified as epistemological or ontological , assert the meaninglessness or unintelligibility of basic terms such as "God" and statements such as "God

1200-454: Is a rejection of the belief that any deities exist. In an even narrower sense, atheism is specifically the position that there are no deities. Atheism is contrasted with theism , which is the belief that at least one deity exists. Historically, evidence of atheistic viewpoints can be traced back to classical antiquity and early Indian philosophy. In the Western world, atheism declined after Christianity gained prominence. The 16th century and

1275-669: Is a type of incandescent stone", an affirmation with which he tried to deny the divinity of the celestial bodies. In the late fifth century BCE, the Greek lyric poet Diagoras of Melos was sentenced to death in Athens under the charge of being a "godless person" (ἄθεος) after he made fun of the Eleusinian Mysteries , but he fled the city to escape punishment. In post-classical antiquity, philosophers such as Cicero and Sextus Empiricus described Diagoras as an "atheist" who categorically denied

1350-405: Is all-powerful." Theological noncognitivism holds that the statement "God exists" does not express a proposition, but is nonsensical or cognitively meaningless. It has been argued both ways as to whether such individuals can be classified into some form of atheism or agnosticism. Philosophers A. J. Ayer and Theodore M. Drange reject both categories, stating that both camps accept "God exists" as

1425-591: Is fragmentary, based largely on criticism of the ideas by other schools: "Though materialism in some form or other has always been present in India, and occasional references are found in the Vedas, the Buddhistic literature, the Epics, as well as in the later philosophical works we do not find any systematic work on materialism, nor any organized school of followers as the other philosophical schools possess. But almost every work of

1500-445: Is inconsistent with theism. For example, Oppy says arguing for naturalism is an argument for atheism since naturalism and theism "cannot both be true". Fiona Ellis describes the "expansive naturalism" of John McDowell , James Griffin , and David Wiggins while also asserting there are things in human experience which cannot be explained in such terms, such as the concept of value, leaving room for theism. Christopher C. Knight asserts

1575-579: Is malevolent. Is he both able and willing? Then whence cometh evil? Is he neither able nor willing? Then why call him God?" Similar arguments have been made in Buddhist philosophy . Vasubandhu (4th/5th century) outlined numerous Buddhist arguments against God . Philosopher Ludwig Feuerbach and psychoanalyst Sigmund Freud have argued that God and other religious beliefs are human inventions, created to fulfill various psychological and emotional wants or needs. Karl Marx and Friedrich Engels , influenced by

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1650-430: Is not compatible with a world where there is evil and suffering , and where divine love is hidden from many people. Epicurus is credited with first expounding the problem of evil. David Hume in his Dialogues concerning Natural Religion (1779) cited Epicurus in stating the argument as a series of questions: "Is God willing to prevent evil, but not able? Then he is impotent. Is he able, but not willing? Then he

1725-403: Is nothing more than the noises reasonable people make in the presence of unjustified religious beliefs. In early ancient Greek , the adjective átheos ( ἄθεος , from the privative ἀ- + θεός "god") meant "godless". It was first used as a term of censure roughly meaning "ungodly" or "impious". In the 5th century BCE, the word began to indicate more deliberate and active godlessness in

1800-622: Is positively correlated with irreligion. He found that there are much lower concentrations of atheism and secularity in poorer, less developed nations (particularly in Africa and South America) than in the richer industrialized democracies. His findings relating specifically to atheism in the US were that compared to religious people in the US, "atheists and secular people" are less nationalistic , prejudiced , antisemitic , racist , dogmatic , ethnocentric , closed-minded, and authoritarian, and in US states with

1875-597: Is the conscious rejection of belief. It is usual to define atheism in terms of an explicit stance against theism. For the purposes of his paper on "philosophical atheism", Ernest Nagel contested including the mere absence of theistic belief as a type of atheism. Graham Oppy classifies as innocents those who never considered the question because they lack any understanding of what a god is, for example one-month-old babies. Philosophers such as Antony Flew and Michael Martin have contrasted positive (strong/hard) atheism with negative (weak/soft) atheism. Positive atheism

1950-602: Is the explicit affirmation that gods do not exist. Negative atheism includes all other forms of non-theism. According to this categorization, anyone who is not a theist is either a negative or a positive atheist. Michael Martin, for example, asserts that agnosticism entails negative atheism. Agnostic atheism encompasses both atheism and agnosticism. However, many agnostics see their view as distinct from atheism. According to atheists' arguments, unproven religious propositions deserve as much disbelief as all other unproven propositions. Atheist criticism of agnosticism says that

2025-418: Is unacquainted with theism is an atheist because he does not believe in a god. This category would also include the child with the conceptual capacity to grasp the issues involved, but who is still unaware of those issues. The fact that this child does not believe in god qualifies him as an atheist." Implicit atheism is "the absence of theistic belief without a conscious rejection of it" and explicit atheism

2100-590: The Age of Enlightenment marked the resurgence of atheistic thought in Europe. Atheism achieved a significant position worldwide in the 20th century. Estimates of those who have an absence of belief in a god range from 500 million to 1.1 billion people . Atheist organizations have defended the autonomy of science , freedom of thought , secular ethics and secularism . Arguments for atheism range from philosophical to social approaches. Rationales for not believing in deities include

2175-582: The Roman Empire , Christians were executed for their rejection of the Roman gods in general and the Imperial cult of ancient Rome in particular. There was, however, a heavy struggle between Christians and pagans, in which each group accused the other of atheism, for not practicing the religion which they considered correct. When Christianity became the state religion of Rome under Theodosius I in 381, heresy became

2250-482: The Epicureans was to attain ataraxia ("peace of mind") and one important way of doing this was by exposing fear of divine wrath as irrational. The Epicureans also denied the existence of an afterlife and the need to fear divine punishment after death. Euhemerus ( c.  300 BCE ) published his view that the gods were only the deified rulers and founders of the past. Although not strictly an atheist, Euhemerus

2325-562: The Greek Cyrenaic school . This branch of Indian philosophy is classified as heterodox due to its rejection of the authority of Vedas and hence is not considered part of the six orthodox schools of Indian philosophy . It is noteworthy as evidence of a materialistic movement in ancient India. Satischandra Chatterjee and Dhirendramohan Datta explain in An Introduction to Indian Philosophy that our understanding of Chārvāka philosophy

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2400-527: The Greek word into the Latin átheos . The term found frequent use in the debate between early Christians and Hellenists , with each side attributing it, in the pejorative sense, to the other. The term atheist (from the French athée ), in the sense of "one who ... denies the existence of God or gods", predates atheism in English, being first found as early as 1566, and again in 1571. Atheist as

2475-488: The advantage of being more inclined to make such evaluations. Some prominent atheists—most recently Christopher Hitchens , Daniel Dennett , Sam Harris , and Richard Dawkins , and following such thinkers as Bertrand Russell , Robert G. Ingersoll , Voltaire , and novelist José Saramago —have criticized religions, citing harmful aspects of religious practices and doctrines. The 19th-century German political theorist and sociologist Karl Marx called religion "the sigh of

2550-456: The ambiguity involved in defining atheism arises from the definitions of words like deity and god . The variety of wildly different conceptions of God and deities lead to differing ideas regarding atheism's applicability. The ancient Romans accused Christians of being atheists for not worshiping the pagan deities. Gradually, this view fell into disfavor as theism came to be understood as encompassing belief in any divinity. With respect to

2625-455: The authority of the new Protestant churches". Deism gained influence in France, Prussia, and England. In 1546, French scholar Etienne Dolet was executed upon accusation of being an atheist. The philosopher Baruch Spinoza was "probably the first well known 'semi-atheist' to announce himself in a Christian land in the modern era", according to Blainey. Spinoza believed that natural laws explained

2700-415: The basis of my words! Protagoras has sometimes been taken to be an atheist, but rather espoused agnostic views, commenting that "Concerning the gods I am unable to discover whether they exist or not, or what they are like in form; for there are many hindrances to knowledge, the obscurity of the subject and the brevity of human life." The Athenian public associated Socrates ( c.  470–399 BCE ) with

2775-881: The cause of scientific skepticism. Nagel was an atheist . Nagel was an elected member of the American Philosophical Society (1962) and the American Academy of Arts and Sciences (1981). He died in New York . He had two sons, Alexander Nagel (professor of mathematics at the University of Wisconsin) and Sidney Nagel (professor of physics at the University of Chicago). Nagel's doctoral students include Morton White , Patrick Suppes , Henry Kyburg , Isaac Levi , and Kenneth Schaffner . A festschrift , Philosophy, Science and Method: Essays in Honor of Ernest Nagel ,

2850-461: The charges of atheism at his trial. From a survey of these 5th-century BCE philosophers, David Sedley has concluded that none of them openly defended radical atheism, but since Classical sources clearly attest to radical atheist ideas Athens probably had an "atheist underground". Religious skepticism continued into the Hellenistic period , and from this period the most important Greek thinker in

2925-484: The consequent prejudice that warps his mind, that prevents its expansion, that renders him the slave of fiction, appears to doom him to continual error." In Great Britain, William Hammon and physician Mathew Turner authored a pamphlet in response to Joseph Priestley 's Letters to a Philosophical Unbeliever . Theirs was the first work in English to openly defend atheism, and implied that established sentiment of Christianity made speaking up in defense of atheism an act with

3000-412: The contrary, among them examples of literal "atheists in foxholes". There exist normative ethical systems that do not require principles and rules to be given by a deity. According to Plato's Euthyphro dilemma , the role of the gods in determining right from wrong is either unnecessary or arbitrary. The argument that morality must be derived from God , and cannot exist without a wise creator, has been

3075-509: The criticism of that vale of tears of which religion is the halo." Sam Harris criticizes Western religion's reliance on divine authority as lending itself to authoritarianism and dogmatism . Multiple studies have discovered there to be a correlation between religious fundamentalism and extrinsic religion (when religion is held because it serves ulterior interests) and authoritarianism, dogmatism, and prejudice. These arguments—combined with historical events that are argued to demonstrate

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3150-682: The dangers of religion, such as the Crusades , inquisitions , witch trials , and terrorist attacks —have been used in response to claims of beneficial effects of belief in religion. Believers counter-argue that some regimes that espouse atheism , such as the Soviet Union , have also been guilty of mass murder. In response to those claims, atheists such as Sam Harris and Richard Dawkins have stated that Stalin's atrocities were influenced not by atheism but by dogmatic ideology, and that while Stalin and Mao happened to be atheists, they did not do their deeds in

3225-499: The development of atheism was the philosopher Epicurus ( c.  300 BCE ). Drawing on the ideas of Democritus and the Atomists, he espoused a materialistic philosophy according to which the universe was governed by the laws of chance without the need for divine intervention (see scientific determinism ). Although Epicurus still maintained that the gods existed, he believed that they were uninterested in human affairs. The aim of

3300-489: The divine essence could not be intuitively or rationally apprehended by human intellect. Sects deemed heretical such as the Waldensians were also accused of being atheistic. The resulting division between faith and reason influenced later radical and reformist theologians. The Renaissance did much to expand the scope of free thought and skeptical inquiry. Individuals such as Leonardo da Vinci sought experimentation as

3375-516: The existence of God, which assert the incompatibility between certain traits, such as perfection, creator-status, immutability , omniscience , omnipresence , omnipotence , omnibenevolence , transcendence , personhood (a personal being), non-physicality, justice , and mercy . Theodicean atheists believe that the world as they experience it cannot be reconciled with the qualities commonly ascribed to God and gods by theologians. They argue that an omniscient , omnipotent , and omnibenevolent God

3450-535: The existence of gods but on the theist to provide a rationale for theism. Writers disagree on how best to define and classify atheism , contesting what supernatural entities are considered gods, whether atheism is a philosophical position or merely the absence of one, and whether it requires a conscious, explicit rejection; however, the norm is to define atheism in terms of an explicit stance against theism. Atheism has been regarded as compatible with agnosticism , but has also been contrasted with it. Some of

3525-458: The existence of gods, recommending that one should suspend judgment regarding the matter. His relatively large volume of surviving works had a lasting influence on later philosophers. The meaning of "atheist" changed over the course of classical antiquity. Early Christians were widely reviled as "atheists" because they did not believe in the existence of the Graeco-Roman deities. During

3600-500: The existence of the gods, but in modern scholarship Marek Winiarczyk has defended the view that Diagoras was not an atheist in the modern sense, in a view that has proved influential. On the other hand, the verdict has been challenged by Tim Whitmarsh , who argues that Diagoras rejected the gods on the basis of the problem of evil , and this argument was in turn alluded to in Euripides' fragmentary play Bellerophon . A fragment from

3675-756: The expulsion of many clerics from France, lasting until the Thermidorian Reaction . The radical Jacobins seized power in 1793. The Jacobins were deists and introduced the Cult of the Supreme Being as a new French state religion. Ernest Nagel Nagel was born in Nové Mesto nad Váhom (now in Slovakia , then Vágújhely and part of the Austro-Hungarian Empire ) to Jewish parents. His mother, Frida Weiss,

3750-411: The highest percentages of atheists, the murder rate is lower than average. In the most religious states, the murder rate is higher than average. Joseph Baker and Buster Smith assert that one of the common themes of atheism is that most atheists "typically construe atheism as more moral than religion". One of the most common criticisms of atheism has been to the contrary: that denying the existence of

3825-405: The lack of evidence , the problem of evil , the argument from inconsistent revelations , the rejection of concepts that cannot be falsified , and the argument from nonbelief . Nonbelievers contend that atheism is a more parsimonious position than theism and that everyone is born without beliefs in deities; therefore, they argue that the burden of proof lies not on the atheist to disprove

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3900-708: The materialism or physicalism include idealism , dualism and other forms of monism. Naturalism is also used to describe the view that everything that exists is fundamentally natural, and that there are no supernatural phenomena. According to naturalist view, science can explain the world with physical laws and through natural phenomena. Philosopher Graham Oppy references a PhilPapers survey that says 56.5% of philosophers in academics lean toward physicalism; 49.8% lean toward naturalism. According to Graham Oppy, direct arguments for atheism aim at showing theism fails on its own terms, while indirect arguments are those inferred from direct arguments in favor of something else that

3975-400: The modern sense was extremely rare in ancient Greece. Pre-Socratic Atomists such as Democritus attempted to explain the world in a purely materialistic way and interpreted religion as a human reaction to natural phenomena, but did not explicitly deny the gods' existence. Anaxagoras , whom Irenaeus calls "the atheist", was accused of impiety and condemned for stating that "the sun

4050-417: The name of atheism. People who self-identify as atheists are often assumed to be irreligious , but some sects within major religions reject the existence of a personal, creator deity . It has been said that atheism is not mutually exclusive with respect to some religious and spiritual belief systems, including modern Neopagan movements. In recent years, certain religious denominations have accumulated

4125-402: The need for the term "atheism". In his book Letter to a Christian Nation , Sam Harris wrote: In fact, "atheism" is a term that should not even exist. No one ever needs to identify himself as a "non- astrologer " or a "non- alchemist ". We do not have words for people who doubt that Elvis is still alive or that aliens have traversed the galaxy only to molest ranchers and their cattle. Atheism

4200-508: The new trends in philosophy on the continent. Except for one year (1966-1967) at Rockefeller University , Nagel spent his entire academic career at Columbia. He became the first John Dewey Professor of Philosophy there in 1955. And then University Professor from 1967 until his retirement in 1970, after which he continued to teach. In 1977, he was one of the few philosophers elected to the National Academy of Sciences . His work concerned

4275-436: The oppressed creature, the heart of a heartless world, and the soul of soulless conditions. It is the opium of the people ". He goes on to say, "The abolition of religion as the illusory happiness of the people is the demand for their real happiness. To call on them to give up their illusions about their condition is to call on them to give up a condition that requires illusions. The criticism of religion is, therefore, in embryo,

4350-467: The other schools states, for refutation, the materialistic views. Our knowledge of Indian materialism is chiefly based on these." Other Indian philosophies generally regarded as atheistic include Classical Samkhya and Purva Mimamsa . The rejection of a personal creator "God" is also seen in Jainism and Buddhism in India. Western atheism has its roots in pre-Socratic Greek philosophy , but atheism in

4425-444: The philosophy of mathematical fields such as geometry and probability , quantum mechanics , and the status of reductive and inductive theories of science . His book The Structure of Science (1961) practically inaugurated the field of analytic philosophy of science . He expounded the different kinds of explanation in different fields, and was sceptical about attempts to unify the nature of scientific laws or explanations. He

4500-662: The range of phenomena being rejected, atheism may counter anything from the existence of a deity, to the existence of any spiritual , supernatural , or transcendental concepts. Definitions of atheism also vary in the degree of consideration a person must put to the idea of gods to be considered an atheist. Atheism has been defined as the absence of belief that any deities exist. This broad definition would include newborns and other people who have not been exposed to theistic ideas. As far back as 1772, Baron d'Holbach said that "All children are born Atheists; they have no idea of God." Similarly, George H. Smith suggested that: "The man who

4575-418: The sense of "severing relations with the gods" or "denying the gods". The term ἀσεβής ( asebēs ) then came to be applied against those who impiously denied or disrespected the local gods, even if they believed in other gods. Modern translations of classical texts sometimes render átheos as "atheistic". As an abstract noun, there was also ἀθεότης ( atheotēs ), "atheism". Cicero transliterated

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4650-450: The term to refer to disbelief in all deities, though it remains common in Western society to describe atheism as "disbelief in God". Skepticism , based on the ideas of David Hume , asserts that certainty about anything is impossible, so one can never know for sure whether or not a god exists. Hume, however, held that such unobservable metaphysical concepts should be rejected as "sophistry and illusion". Michael Martin argues that atheism

4725-516: The times of the historical Vedic religion . Among the six orthodox schools of Hindu philosophy, Samkhya , the oldest philosophical school of thought, does not accept God, and the early Mimamsa also rejected the notion of God. The thoroughly materialistic and anti-theistic philosophical Chārvāka (or Lokāyata ) school that originated in India around the 6th century BCE is probably the most explicitly atheistic school of philosophy in India, similar to

4800-452: The trends in pre-Socratic philosophy towards naturalistic inquiry and the rejection of divine explanations for phenomena. Aristophanes ' comic play The Clouds (performed 423 BCE) portrays Socrates as teaching his students that the traditional Greek deities do not exist. Socrates was later tried and executed under the charge of not believing in the gods of the state and instead worshipping foreign gods. Socrates himself vehemently denied

4875-572: The unprovability of a god's existence does not imply an equal probability of either possibility. Australian philosopher J.J.C. Smart argues that "sometimes a person who is really an atheist may describe herself, even passionately, as an agnostic because of unreasonable generalized philosophical skepticism which would preclude us from saying that we know anything whatever, except perhaps the truths of mathematics and formal logic." Consequently, some atheist authors, such as Richard Dawkins , prefer distinguishing theist, agnostic, and atheist positions along

4950-575: The very possibility of metaphysical knowledge. Both philosophers undermined the metaphysical basis of natural theology and criticized classical arguments for the existence of God . One goal of the French Revolution was a restructuring and subordination of the clergy with respect to the state through the Civil Constitution of the Clergy . Attempts to enforce it led to anti-clerical violence and

5025-690: The work of Feuerbach, argued that belief in God and religion are social functions, used by those in power to oppress the working class. According to Mikhail Bakunin , "the idea of God implies the abdication of human reason and justice; it is the most decisive negation of human liberty, and necessarily ends in the enslavement of mankind, in theory, and practice." He reversed Voltaire 's aphorism that if God did not exist, it would be necessary to invent him, writing instead that "if God really existed, it would be necessary to abolish him." Sociologist Phil Zuckerman analyzed previous social science research on secularity and non-belief and concluded that societal well-being

5100-450: The workings of the universe. In 1661, he published his Short Treatise on God . Criticism of Christianity became increasingly frequent in the 17th and 18th centuries, especially in France and England. Some Protestant thinkers, such as Thomas Hobbes , espoused a materialist philosophy and skepticism toward supernatural occurrences. By the late 17th century, deism came to be openly espoused by intellectuals. The first known explicit atheist

5175-420: Was a "fable invented by the ancients" and that humans were "of two sorts: those with brains, but no religion, and those with religion, but no brains". Despite the fact that these authors were relatively prolific writers, little of their work survives, mainly being preserved through quotations and excerpts in later works by Muslim apologists attempting to refute them. In Europe, the espousal of atheistic views

5250-484: Was a prominent figure in the French Enlightenment who is best known for his atheism and for his voluminous writings against religion, the most famous of them being The System of Nature (1770) but also Christianity Unveiled . "The source of man's unhappiness is his ignorance of Nature. The pertinacity with which he clings to blind opinions imbibed in his infancy, which interweave themselves with his existence,

5325-550: Was from the nearby town of Vrbové (or Verbo). He emigrated to the United States at the age of 10 and became a U.S. citizen in 1919. He received a BSc from the City College of New York in 1923, and earned his PhD from Columbia University in 1931, with a dissertation on the concept of measurement. Through the award of a Guggeheim Fellowship he was able to spend a year in Europe (from August 1934 to July 1935) to learn about

5400-406: Was later criticized by Plutarch for having "spread atheism over the whole inhabited earth by obliterating the gods". In the 3rd century BCE, the Hellenistic philosophers Theodorus Cyrenaicus and Strato of Lampsacus were also reputed to deny the existence of the gods. The Pyrrhonist philosopher Sextus Empiricus ( c.  200 CE ) compiled a large number of ancient arguments against

5475-537: Was rare during the Early Middle Ages and Middle Ages (see Medieval Inquisition ). There were, however, movements within this period that furthered heterodox conceptions of the Christian god, including differing views of the nature, transcendence, and knowability of God. William of Ockham inspired anti-metaphysical tendencies with his nominalist limitation of human knowledge to singular objects, and asserted that

5550-614: Was the German critic of religion Matthias Knutzen in his three writings of 1674. He was followed by two other explicit atheist writers, the Polish ex-Jesuit philosopher Kazimierz Łyszczyński (who most likely authored the world's first treatise on the non-existence of God ) and in the 1720s by the French priest Jean Meslier . In the course of the 18th century, other openly atheistic thinkers followed, such as Baron d'Holbach , Jacques-André Naigeon , and other French materialists . Baron d'Holbach

5625-590: Was the first to propose that by positing analytic equivalencies (or "bridge laws") between the terms of different sciences, one could eliminate all ontological commitments except those required by the most basic science. He also upheld the view that social sciences are scientific, and should adopt the same standards as natural sciences . Nagel wrote An Introduction to Logic and the Scientific Method with Morris Raphael Cohen , his CCNY teacher in 1934. In 1958, he published with James R. Newman Gödel's proof ,

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