Besides his more famous works of philosophy - "Discourse on Method", "Meditations on First Philosophy", and "Principles of Philosophy" - Descartes devoted a great deal of time and thought to the study of physiology and anatomy. An account of his activities in 1629 reports that he visited butcher shops on an almost daily basis to study specific animal organs, and he practised dissection and even vivisection to explore the workings of major organ systems. In the 1630s, he assisted in the dissection of human cadavers - all to satisfy his intense curiosity about how bodies, animal and human, work. The fruits of this research can be found in his "Treatise of Man", a work that he decided not to publish for fear of suffering the same fate as Galileo. Consequently, this fascinating treatise did not appear until twelve years after his death. This is a landmark work that students of history, medicine, biology, and the history of science will find richly rewarding.
Meditations on First Philosophy (1641) and Principles of Philosophy (1644), main works of French mathematician and scientist René Descartes, considered the father of analytic geometry and the founder of modern rationalism, include the famous dictum "I think, therefore I am."
A set of two perpendicular lines in a plane or three in space intersect at an origin in Cartesian coordinate system. Cartesian coordinate, a member of the set of numbers, distances, locates a point in this system. Cartesian coordinates describe all points of a Cartesian plane.
From given sets, {X} and {Y}, one can construct Cartesian product, a set of all pairs of elements (x, y), such that x belongs to {X} and y belongs to {Y}.
René Descartes, a writer, highly influenced society. People continue to study closely his writings and subsequently responded in the west. He of the key figures in the revolution also apparently influenced the named coordinate system, used in planes and algebra.
Descartes frequently sets his views apart from those of his predecessors. In the opening section of the Passions of the Soul, a treatise on the early version of now commonly called emotions, he goes so far to assert that he writes on his topic "as if no one had written on these matters before." Many elements in late Aristotelianism, the revived Stoicism of the 16th century, or earlier like Saint Augustine of Hippo provide precedents. Naturally, he differs from the schools on two major points: He rejects corporeal substance into matter and form and any appeal to divine or natural ends in explaining natural phenomena. In his theology, he insists on the absolute freedom of act of creation of God.
Baruch Spinoza and Baron Gottfried Wilhelm von Leibniz later advocated Descartes, a major figure in 17th century Continent, and the empiricist school of thought, consisting of Thomas Hobbes, John Locke, George Berkeley, and David Hume, opposed him. Leibniz and Descartes, all well versed like Spinoza, contributed greatly. Descartes, the crucial bridge with algebra, invented the coordinate system and calculus. Reflections of Descartes on mind and mechanism began the strain of western thought; much later, the invention of the electronic computer and the possibility of machine intelligence impelled this thought, which blossomed into the Turing test and related thought. His stated most in §7 of part I and in part IV of Discourse on the Method.
My edition of this work is abridged heavily. However, I did read this abridged version willingly, very willingly, because many of the scientific understandings of bodily functions are irrelevant today, however the understandings of how vision works, were actually very close to what we understand today. This work also mentions the soul, an important part of life, in conjunction with these living processes, like Aristotle's On the Soul. This was an good document, but not amazing. I would only recommend it for diehard Descartes' fans. I would not recommend reading an abridged version of the Optics after this though.
Un librito divertido. Acuerdos y/o diferencias de opinión aparte, Descartes no cumple con muchas de las promesas que hace en las primeras páginas (que explicará, por ejemplo, cómo es la interacción entre el alma y el cuerpo).
Vale la pena leerlo. Es especialmente curioso como documento histórico, para enterarse de las ideas de la época en medicina y biología.