There is an astonishing imagination, even in the science of mathematics. ... We repeat, there was far more imagination in the head of Archimedes than in that of Homer.

Whoever serves his country well has no need of ancestors.

Virtue between men is a commerce of good actions: he who has no part in this commerce must not be reckoned.

We never live; we are always in the expectation of living.

Very often, say what you will, a knave is only a fool.

There are no sects in geometry.

Wherever my travels may lead, paradise is where I am.