René Descartes quotes

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René Descartes

Birthdate: 31. March 1596
Date of death: 11. February 1650

René Descartes was a French philosopher, mathematician, and scientist. Dubbed the father of modern western philosophy, much of subsequent Western philosophy is a response to his writings, which are studied closely to this day. A native of the Kingdom of France, he spent about 20 years of his life in the Dutch Republic after serving for a while in the Dutch States Army of Maurice of Nassau, Prince of Orange and the Stadtholder of the United Provinces. He is generally considered one of the most notable intellectual representatives of the Dutch Golden Age.

Descartes's Meditations on First Philosophy continues to be a standard text at most university philosophy departments. Descartes's influence in mathematics is equally apparent; the Cartesian coordinate system was named after him. He is credited as the father of analytical geometry, the bridge between algebra and geometry, used in the discovery of infinitesimal calculus and analysis. Descartes was also one of the key figures in the scientific revolution.

Descartes refused to accept the authority of previous philosophers. He frequently set his views apart from those of his predecessors. In the opening section of the Les passions de l'âme, a treatise on the early modern version of what are now commonly called emotions, Descartes goes so far as to assert that he will write on this topic "as if no one had written on these matters before". His best known philosophical statement is "Cogito ergo sum" , found in part IV of Discours de la méthode and §7 of part I of Principles of Philosophy .

Many elements of his philosophy have precedents in late Aristotelianism, the revived Stoicism of the 16th century, or in earlier philosophers like Augustine. In his natural philosophy, he differed from the schools on two major points: first, he rejected the splitting of corporeal substance into matter and form; second, he rejected any appeal to final ends, divine or natural, in explaining natural phenomena. In his theology, he insists on the absolute freedom of God's act of creation.

Descartes laid the foundation for 17th-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. Leibniz, Spinoza and Descartes were all well-versed in mathematics as well as philosophy, and Descartes and Leibniz contributed greatly to science as well.

Works

„It is not enough to have a good mind. The main thing is to use it well.“

—  René Descartes

Variant: It is not enough to have a good mind; the main thing is to use it well.
Source: Discourse on Method

„The entire method consists in the order and arrangement of the things to which the mind’s eye must turn so that we can discover some truth.“

—  René Descartes, book Rules for the Direction of the Mind

Rules for the Direction of the Mind: X.379
As quoted in [Clarke, Desmond M., 2006, Descartes : a Biography, Cambridge Press, 67, ISBN 978-0-521-82301-2]

„I think, therefore I am.“

—  René Descartes

Je pense, donc je suis.
Le Discours de la Méthode (1637)
Variant: I think, therefore I am.

„If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things.“

—  René Descartes, book Principles of Philosophy

Original Latin: Veritatem inquirenti, semel in vita de omnibus, quantum fieri potest, esse dubitandum
Variant translation: If you would be a real seeker after truth, you must at least once in your life doubt, as far as possible, all things.
Principles of Philosophy (1644)
Variant: In order to seek truth, it is necessary once in the course of our life, to doubt, as far as possible, of all things.

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„It is only prudent never to place complete confidence in that by which we have even once been deceived.“

—  René Descartes, book Meditations on First Philosophy

Variant: ... it is a mark of prudence never to place our complete trust in those who have deceived us even once.
Source: Meditations on First Philosophy

„Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Etiam egestas wisi a erat. Morbi imperdiet, mauris ac auctor dictum.“

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