The vine that has grown old on an old tree falls with the ruin of that tree, and through that bad companionship must perish with it.

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

It's easier to resist at the beginning than at the end.

Strive to preserve your health; and in this you will better succeed in proportion as you keep clear of the physicians, for their drugs are a kind of alchemy concerning which there are no fewer books than there are medicines.

A single and distinct luminous body causes stronger relief in the objects than a diffused light; as may be seen by comparing one side of a landscape illuminated by the sun, and one overshadowed by clouds, and illuminated only by the diffused light of the atmosphere.

Fire is to represent truth because it destroys all sophistry and lies; and the mask is for lying and falsehood which conceal truth.

He who walks straight rarely falls.