Understanding is nothing else than conception caused by speech.

The disembodied spirit is immortal; there is nothing of it that can grow old or die. But the embodied spirit sees death on the horizon as soon as its day dawns.

Wisdom, properly so called, is nothing else but this: the perfect knowledge of the truth in all matters whatsoever.

Man is distinguished not only by his reason, but also by this singular passion, from all other animals.

Do not that to another, which thou wouldst not have done to thyself.

Unnecessary laws are not good laws, but traps for money.

If men are naturally in a state of war, why do they always carry arms and why do they have keys to lock their doors?