He turns not back who is bound to a star.

A man of supreme folly: his life flies away while he is merely hoping to enjoy it.

Nature varies the seed according to the variety of the things she desires to produce in the world.

I love those who can smile in trouble.

Music cannot be called otherwise than the sister of painting, for she is dependent upon hearing, a sense second to sight, and her harmony is composed of the union of its proportional parts sounded simultaneously, rising and falling in one or more harmonic rhythms.

Every action done by nature is done in the shortest way.

No human investigation can be called real science if it cannot be demonstrated mathematically.