Rene Descartes (1596-1650) French philosopher, scientist, mathematician

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I think; therefore I am. [La., Cogito ergo sum] - Rene Descartes


Divide each difficulty into as many parts as is feasible and necessary to resolve it. - Rene Descartes


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


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. - Rene Descartes


At the time, my grandparents told my mom, 'Lordy, what is Shannen doing?' Now I've calmed down. (On her reputation for bad behaviour.) - Rene Descartes


Of all things, good sense is the most fairly distributed: everyone thinks he is so well supplied with it that even those who are the hardest to satisfy in every other respect never desire more of it than they already have. - Rene Descartes


I am indeed amazed when I consider how weak my mind is and how prone to error. - Rene Descartes


The two operations of our understanding, intuition and deduction, on which alone we have said we must rely in the acquisition of knowledge. - Rene Descartes


Good sense is of all things in the world the most equally distributed, for everybody thinks he is so well supplied with it, that even those most difficult to please in all other matters never desire more of it than they already possess. - Rene Descartes