The senses deceive from time to time, and it is prudent never to trust wholly those who have deceived us even once. – Rene Descartes
Each problem that I solved became a rule, which served afterwards to solve other problems. – Rene Descartes
I hope that posterity will judge me kindly, not only as to the things which I have explained, but also to those which I have intentionally omitted so as to leave to others the pleasure of discovery. – Rene Descartes
It is not enough to have a good mind the main thing is to use it well. – Rene Descartes