A constitution is the arrangement of magistracies in a state.

Misfortune shows those who are not really friends.

Courage is the first of human qualities because it is the quality which guarantees the others.

A man's happiness consists in the free exercise of his highest faculties.

We have no evidence as yet about mind or the power to think; it seems to be a widely different kind of soul, differing as what is eternal from what is perishable; it alone is capable of existence in isolation from all other psychic powers.

It is not easy for a person to do any great harm when his tenure of office is short, whereas long possession begets tyranny.

The business of every art is to bring something into existence, and the practice of an art involves the study of how to bring into existence something which is capable of having such an existence and has its efficient cause in the maker and not in itself.