French philosopher and mathematician
Each problem that I solved became a rule which served afterwards to solve other problems.
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.
With me everything turns into mathematics.
Perfect numbers like perfect men are very rare.
Intuition is the conception of an attentive mind, so clear, so distinct, and so effortless that we cannot doubt what we have so conceived.