Descartes was born in La Haye en Touraine (now Descartes), Indre-et-Loire, France.
So Descartes concludes that the only indubitable knowledge is that he is a thinking thing.
The village in the Loire Valley where he was born was renamed La Haye—Descartes in 1802, which was shortened to "Descartes" in 1967.
On November 10, 1618, while walking through Breda, Descartes met Isaac Beeckman, who sparked his interest in mathematics and the new physics, particularly the problem of the fall of heavy bodies.
The first item of unshakable knowledge that Descartes argues for is the aforementioned cogito, or thinking thing.
Descartes concludes that he can be certain that he exists because he thinks.
Descartes was interviewed by Frans Burman at Egmond-Binnen in 1648.
Leibniz's Thйodicйe (1710) was meant to directly address the problem of evil in history in light of divinely ordained plan.
Renй Descartes died on February 11, 1650, in Stockholm, Sweden, where he had been invited as a teacher for Queen Christina of Sweden.
Descartes is often regarded as the first modern thinker to provide a philosophical framework for the natural sciences as they began to develop.
Descartes suggested that the pineal gland is "the seat of the soul" for several reasons.
Second, Descartes observed that the pineal gland was located near the ventricles.
Others believe that Descartes may have contracted pneumonia as result of nursing a French ambassador, Dejion A. Nopeleen, ill with the aforementioned disease, back to health.
Descartes' theory provided the basis for the calculus of Newton and Leibniz, by applying infinitesimal calculus to the tangent line problem, thus permitting the evolution of that branch of modern mathematics.
Finally, distinguishing between hepatic causes of jaundice, comparing levels of AST and ALT can prove useful.
In 1633, Galileo was condemned by the Roman Catholic Church, and Descartes abandoned plans to publish Treatise on the World, his work of the previous four years.
Initially, Descartes arrives at only a single principle: Thought exists.
Cartesian dualism set the agenda for philosophical discussion of the mind-body problem for many years after Descartes's death.
Descartes also wrote a response to skepticism about the existence of the external world.
Descartes was present at the siege of La Rochelle by Cardinal Richelieu in 1627.
Descartes never actually practiced law, however, and in 1618, during the Thirty Years' War, he entered the service of Maurice of Nassau, leader of the United Provinces of the Netherlands.
To further demonstrate the limitations of the senses, Descartes proceeds with what is known as the Wax Argument.
Descartes' rule of signs is also a commonly used method in modern mathematics to determine possible quantities of positive and negative zeros of a function.
Descartes continued to publish works concerning both mathematics and philosophy for the rest of his life.
One of Descartes' most enduring legacies was his development of Cartesian geometry, the algebraic system taught in schools today.
Descartes argued that only humans have minds, and that the mind interacts with the body at the pineal gland.
Descartes invented analytic geometry, and discovered the law of conservation of momentum.
On November 10, 1619, while traveling in Germany and thinking about using mathematics to solve problems in physics, Descartes had a dream through which he "discovered the foundations of a marvelous science.
Descartes was a major figure in seventeenth century continental rationalism, later advocated by Baruch Spinoza and Gottfried Leibniz, and opposed by the empiricist school of thought consisting of Hobbes, Locke, Berkeley, and Hume.
In 1643, Cartesian philosophy was condemned at the University of Utrecht, and Descartes began his long correspondence with Princess Elizabeth of Bohemia.
Descartes suggested that the body works like a machine, that it has the material properties of extension and motion, and that it follows the laws of physics.
Descartes also studied St. Augustine's concept of free will, the belief that human will is essentially equal to God's will; that is, that humans are naturally independent of God's will.
Descartes defines "thought" (cogitatio) as "what happens in me such that I am immediately conscious of it, insofar as I am conscious of it."
Descartes frequently sets his views apart from those of his predecessors.
Descartes also made contributions to the field of optics.
Renй Descartes (French IPA: ) (March 31, 1596 – February 11, 1650), also known as Renatus Cartesius (latinized form), was a highly influential French philosopher, mathematician, scientist, and writer.