philosophy Philosophy (from , ) is the systematized study of general and fundamental questions, such as those about existence, reason, knowledge, values, mind, and language. Such questions are often posed as problems to be studied or resolved. Some ...

and in its current sense, rationalism is a line of thought that appeals to reason or the intellect as a primary or fundamental source of knowledge or justification".Lacey, A. R. (1996), ''A Dictionary of Philosophy'', 1st edition, Routledge and Kegan Paul, 1976. 2nd edition, 1986. 3rd edition, Routledge, London, UK, 1996. page 286 It is typically contrasted with

empiricism In philosophy, empiricism is an epistemological theory that holds that knowledge or justification comes only or primarily from sensory experience. It is one of several views within epistemology, along with rationalism and skepticism. Empir ...

, which appeals to sensory experience as a primary or fundamental source of knowledge or justification. Rationalism should not be confused with

rationality Rationality is the quality of being guided by or based on reasons. In this regard, a person acts rationally if they have a good reason for what they do or a belief is rational if it is based on strong evidence. This quality can apply to an abil ...

, nor with rationalization. The following is a list of rationalists, that is, people who theorize about rationalism as a line of thought within the area of

Philosophy Philosophy (from , ) is the systematized study of general and fundamental questions, such as those about existence, reason, knowledge, values, mind, and language. Such questions are often posed as problems to be studied or resolved. Some ...

Rationalists born BCE

* Pythagoras * Plato * Socrates

Rationalists born in the 1st to 4th centuries

Augustine of Hippo Augustine of Hippo ( , ; la, Aurelius Augustinus Hipponensis; 13 November 354 – 28 August 430), also known as Saint Augustine, was a theologian and philosopher of Berber origin and the bishop of Hippo Regius in Numidia, Roman North Af ...

* Origen of Alexandria * Plotinus * Wang Chong

Rationalists born in the Middle Ages

* Al-Farabi * Al-Ma'arri *

Avicenna Ibn Sina ( fa, ابن سینا; 980 – June 1037 CE), commonly known in the West as Avicenna (), was a Persian polymath who is regarded as one of the most significant physicians, astronomers, philosophers, and writers of the Islamic G ...

* Averroes * Maimonides

Rationalists born in the 16th to 19th centuries

* René Descartes *

Nicolas Malebranche Nicolas Malebranche ( , ; 6 August 1638 – 13 October 1715) was a French Oratorian Catholic priest and rationalist philosopher. In his works, he sought to synthesize the thought of St. Augustine and Descartes, in order to demonstrate the ...

Baruch Spinoza Baruch (de) Spinoza (born Bento de Espinosa; later as an author and a correspondent ''Benedictus de Spinoza'', anglicized to ''Benedict de Spinoza''; 24 November 1632 – 21 February 1677) was a Dutch philosopher of Portuguese-Jewish origin, b ...

* Gottfried Leibniz * Christian Wolff

Rationalists born in the 20th century

* David Chalmers * Noam Chomsky * Alvin Plantinga * Ernest Sosa * Prabir Ghosh *

Periyar E. V. Ramasamy Erode Venkatappa Ramasamy (17 September 1879 – 24 December 1973), revered as Periyar or Thanthai Periyar, was an Indian social activist and politician who started the Self-Respect Movement and Dravidar Kazhagam. He is known as the 'Fa ...

* Hosur Narashimaiah *

Abraham Kovoor Abraham Thomas Kovoor (10 April 1898 – 18 September 1978) was an Indian professor and rationalist who gained prominence after retirement for his campaign to expose as frauds various Indian and Sri Lankan "god-men" and so-called paranormal ...

Ayn Rand Alice O'Connor (born Alisa Zinovyevna Rosenbaum;, . Most sources transliterate her given name as either ''Alisa'' or ''Alissa''. , 1905 – March 6, 1982), better known by her pen name Ayn Rand (), was a Russian-born American writer and p ...

References

{{Reflist Rationalists