It is clear, then, that wisdom is knowledge having to do with certain principles and causes. But now, since it is this knowledge that we are seeking, we must consider the following point: of what kind of principles and of what kind of causes is wisdom the knowledge?

... the good for man is an activity of the soul in accordance with virtue, or if there are more kinds of virtue than one, in accordance with the best and most perfect kind.

Man by Nature desires to know.

Suppose, then, that all men were sick or deranged, save one or two of them who were healthy and of right mind. It would then be the latter two who would be thought to be sick and deranged and the former not!

When people are friends, they have no need of justice, but when they are just, they need friendship in addition.

Wishing to be friends is quick work, but friendship is a slow ripening fruit.

When the looms spin by themselves, we'll have no need for slaves.