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.

Freedom is obedience to self-formulated rules.

It is unbecoming for young men to utter maxims.

Every art and every inquiry, and similarly every action and pursuit, is thought to aim at some good; and for this reason the good has rightly been declared to be that at which all things aim.

Art is a higher type of knowledge than experience.

A gentleman is not disturbed by anything

... a science must deal with a subject and its properties.