If happiness, then, is activity expressing virtue, it is reasonable for it to express the supreme virtue, which will be the virtueof the best thing.

All men by nature desire to know. An indication of this is the delight we take in our senses; for even apart from their usefulness they are loved for themselves...

The ultimate end...is not knowledge, but action. To be half right on time may be more important than to obtain the whole truth too late.

A brave man is clear in his discourse, and keeps close to truth.

It is no easy task to be good.

The wise man does not expose himself needlessly to danger, since there are few things for which he cares sufficiently; but he is willing, in great crises, to give even his life - knowing that under certain conditions it is not worthwhile to live.

If everything when it occupies an equal space is at rest, and if that which is in locomotion is always occupying such a space at any moment, the flying arrow is therefore motionless.