People do not naturally become morally excellent or practically wise. They become so, if at all, only as the result of lifelong personal and community effort.

That which is impossible and probable is better than that which is possible and improbable.

The wise man knows of all things, as far as possible, although he has no knowledge of each of them in detail

Patience is so like fortitude that she seems either her sister or her daughter.

Two characteristic marks have above all others been recognized as distinguishing that which has soul in it from that which has not - movement and sensation.

Those who are not angry at the things they should be angry at are thought to be fools, and so are those who are not angry in the right way, at the right time, or with the right persons.

Consider pleasures as they depart, not as they come.