All that we do is done with an eye to something else.

Hope is a waking dream.

All food must be capable of being digested, and that what produces digestion is warmth; that is why everything that has soul in it possesses warmth.

Knowing yourself is the beginning of all wisdom.

Since we think we understand when we know the explanation, and there are four types of explanation (one, what it is to be a thing; one, that if certain things hold it is necessary that this does; another, what initiated the change; and fourth, the aim), all these are proved through the middle term.

Masculine republics give way to feminine democracies, and feminine democracies give way to tyranny.

Every great genius has an admixture of madness.