Quotes by Rene Descartes

. . .to be useful to no one is, strictly speaking, to be worthless. (Rene Descartes)

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

Each problem that I solved became a rule which served afterwards to solve other problems. (Rene Descartes)

Everybody thinks himself so well supplied with common sense that even those most difficult to please. . . never desire more of it than they already have. (Rene Descartes)

Except our own thoughts, there is nothing absolutely in our power. (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)

Good sense is, of all things among men, the most equally distributed: for every one thinks himself so abundantly provided with it, that those even who are the most difficult to satisfy in everything else, do not usually desire a larger measure of this quality than they already possess. (Rene Descartes)

I think therefore I exist. (Rene Descartes)

I think; therefore I am. (Rene Descartes)

If I found any new truths in the sciences, I can say that they follow from, or depend on, five or six principal problems which I succeeded in solving and which I regard as so many battles where the fortunes of war were on my side. (Rene Descartes)