Mechanics is the paradise of the mathematical sciences because by means of it one comes to the fruits of mathematics.

I awoke, only to see that the rest of the world is still asleep.

Do not reveal, if liberty is precious to you; my face is the prison of love.

Any color is more distinctly seen when opposed to its contrary: thus, black on white, blear near yellow, green near red, and so on.

The poet ranks far below the painter in the representation of visible things, and far below the musician in that of invisible things.

If a man has a tent made of linen of which the apertures have all been stopped up, and be it twelve bracchia across (over twenty-five feet) and twelve in depth, he will be able to throw himself down from any height without sustaining injury. [His concept of the parachute.]

Of the original phenomena, light is the most enthralling.