- Frans_Hals,_Portrait_of_René_Descartes.jpg (Wikimedia Commons)
- Frans_Hals_-_Portret_van_René_Descartes.jpg (Wikimedia Commons)
Stanford Encyclopedia of Philosophy
- René Descartes (plato.standford.edu)
René Descartes (1596–1650) was a creative mathematician of the first order, an important scientific thinker, and an original metaphysician. During the course of his life, he was a mathematician first, a natural scientist or “natural philosopher” second, and a metaphysician third. In mathematics, he developed the techniques that made possible algebraic (or “analytic”) geometry. In natural philosophy, he can be credited with several achievements: the first to publish the sine law of refraction; developer of an important empirical account of the rainbow; and proposer of a naturalistic account of the formation of the earth and planets (a precursor to the nebular hypothesis, that the planets formed from loose matter orbiting the sun). More importantly, he offered a new vision of the natural world, which shaped modern physics: a world of matter possessing a few fundamental properties and interacting according to a few universal laws. This natural world included an immaterial mind that, in human beings, was directly related to the brain, a position that led to the modern mind–body problem. In metaphysics (the search for the basic principles of everything there is), Descartes provided arguments for the existence of God and to show that the essence of matter is to be spatially extended, and that the essence of mind is thought (where “thought” includes sensory images as well as rational discourse). Descartes claimed early on to possess a special method, which was variously exhibited in mathematics, natural philosophy, and metaphysics, and which came to include, or to be supplemented by, a method of doubt.
- René Descartes (1596–1650), 1647 - 1648 Frans Hals | SMK Open (open.smk.dk)
- Several versions of Hals’ portrait of Descartes are known, though Hals has painted only one of them and the rest are copies. One of those copies hangs in the Louvre. For a long time, the Louvre thought that they owned the original portrait by Hals, but nowadays the majority of art experts believes that the original is in the Statens Museum for Kunst in Copenhagen.
I think, therefore I am.
René DescartesIn order to seek truth, it is necessary once in the course of our life, to doubt, as far as possible, of all things.
René Descartes (1644), Principles of PhilosophySo blind is the curiosity by which mortals are possessed, that they often conduct their minds along unexplored routes, having no reason to hope for success, but merely being willing to risk the experiment of finding whether the truth they seek lies there."
René Descartes, Le Discours de la Méthode (1637)
- René Descartes (Wikipedia)
René Descartes (/deɪˈkɑːrt/ or UK: /ˈdeɪkɑːrt/; French: [ʁəne dekaʁt]; Latinized: Renatus Cartesius; 31 March 1596 – 11 February 1650) was a French philosopher, scientist, and mathematician, widely considered a seminal figure in the emergence of modern philosophy and science. Mathematics was central to his method of inquiry, and he connected the previously separate fields of geometry and algebra into analytic geometry. Descartes spent much of his working life in the Dutch Republic, initially serving the Dutch States Army, later becoming a central intellectual of the Dutch Golden Age. Although he served a Protestant state and was later counted as a deist by critics, Descartes considered himself a devout Catholic.
