The motions of men must be such as suggest their dignity or their baseness.

Oysters open completely when the moon is full; and when the crab sees one it throws a piece of stone or seaweed into it and the oyster cannot close again so that it serves the crab for meat. Such is the fate of him who opens his mouth too much and thereby puts himself at the mercy of the listener.

Fix your course on a star and you'll navigate any storm.

The eye is the window of the human body through which it feels its way and enjoys the beauty of the world.

Given the cause nature produces the effect in the briefest manner that it can employ.

Music... is the shaping of the invisible.

All objects transmit their image to the eye in pyramids and the nearer to the eye these pyramids are intersected the smaller will the image appear of the objects which cause them.