Doubt everything with comments and illustrations

Rene Descartes is an outstanding mathematician, physicist and physiologist. Until now, we use the mathematical symbolism created by him, and his coordinate system reflects the intuitive representation of a person of the era of the new time about infinite space. But first of all, the Descartes is a philosopher who proposed a radical doubt method for solving the issue of cognition of the world. In the "Rules for the Guide of the mind, he is trying to prove that the result of any scientific lesson is a special direction of the mind, and indicates a way of achieving true knowledge. In the treatise "Primary of Philosophy, Descartes is trying to comprehend knowledge as such, subjecting everything to doubt, and formulate the laws of physics.
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