For what one has to learn to do, we learn by doing.

Love well, be loved and do something of value.

The virtue of a faculty is related to the special function which that faculty performs. Now there are three elements in the soul which control action and the attainment of truth: namely, Sensation, Intellect, and Desire. Of these, Sensation never originates action, as is shown by the fact that animals have sensation but are not capable of action.

Those who believe that all virtue is to be found in their own party principles push matters to extremes; they do not consider that disproportion destroys a state.

Different men seek after happiness in different ways and by different means, and so make for themselves different modes of life and forms of government.

And, speaking generally, passion seems not to be amenable to reason, but only to force.

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.