The soul of animals is characterized by two faculties, (a) the faculty of discrimination which is the work of thought and sense, and (b) the faculty of originating local movement.

As the pleasures of the body are the ones which we most often meet with, and as all men are capable of these, these have usurped the family title; and some men think these are the only pleasures that exist, because they are the only ones which they know.

Fear is pain arising from the anticipation of evil.

No tyrant need fear till men begin to feel confident in each other.

It [Justice] is complete virtue in the fullest sense, because it is the active exercise of complete virtue; and it is complete because its possessor can exercise it in relation to another person, and not only by himself.

A friend is a second self, so that our consciousness of a friend's existence...makes us more fully conscious of our own existence.

Equality consists in the same treatment of similar persons.