All teaching and all intellectual learning come about from already existing knowledge.

It is easy to perform a good action, but not easy to acquire a settled habit of performing such actions.

This much then, is clear: in all our conduct it is the mean that is to be commended.

The intention makes the crime.

The virtue of justice consists in moderation, as regulated by wisdom.

Rightness in our choice of an end is secured by [Moral] Virtue.

For this reason poetry is something more philosophical and more worthy of serious attention than history.