History consists of a series of accumulated imaginative inventions.

my soul is the mirror of the universe, and my body is its frame

Superstition is to religion what astrology is to astronomy the mad daughter of a wise mother. These daughters have too long dominated the earth.

I read these words which are the sum of all moral philosophy, and which cut short all the disputes of the casuists: When in doubt if an action is good or bad, refrain.

The man who, in a fit of melancholy, kills himself today, would have wished to live had he waited a week.

Whoever serves his country well has no need of ancestors.

If there’s life on other planets, then the earth is the Universe’s insane asylum.