Our body is dependent on heaven and heaven on the Spirit.

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.

Feathers shall raise men even as they do birds towards heaven :- That is by letters written with their quills.

You don't get into trouble because of the things you don't know. It is the things you don't know you don't know that really get you into a mess.

In whatever system where the weight attached to the wheel should be the cause of motion of the wheel, without any doubt the center of the gravity of the weight will stop beneath the center of its axle. No instrument devised by human ingenuity, which turns with its wheel, can remedy this effect. Oh, speculators about perpetual motion, how many vain chimeras have you created in the like quest. Go and take you place with the seekers after gold.

The Medici made me and the Medici destroyed me.

Experiment is the sole interpreter of the artifices of Nature.