Mathematics is the art of giving the same name to different things.

It is through science that we prove, but through intuition that we discover.

Mathematical discoveries, small or great are never born of spontaneous generation.

The mathematical facts worthy of being studied are those which, by their analogy with other facts, are capable of leading us to the knowledge of a physical law.

If nature were not beautiful, it would not be worth knowing, and if nature were not worth knowing, life would not be worth living.

A very small cause which escapes our notice determines a considerable effect that we cannot fail to see, and then we say that the effect is due to chance.