Pierre de Fermat

My principle is that light, in its refraction, chooses the path which takes the least time.

I am more interested in the discovery of a single truth than in the glory of a hundred victories.

Numbers obey me; I do not obey them.

The mind must be prepared by long study before it can see the most elegant simplicities.

A problem well stated is a problem half solved.

I leave you with this enigma, which will perhaps occupy you for more than a moment.

The square of 2, augmented by unity, is a prime number; so is the square of that square, and so on.

I have found that the sum of two cubes cannot be a cube.

Truth persists, even when it is not published.

The pleasure of discovery is the greatest reward for our labors.