Young people are in a condition like permanent intoxication, because life is sweet and they are growing.

Bad men are full of repentance.

The ultimate value of life depends upon awareness and the power of contemplation rather than upon mere survival.

It is clear that there is some difference between ends: some ends are energeia [energy], while others are products which are additional to the energeia.

In inventing a model we may assume what we wish, but should avoid impossibilities.

The same ideas, one must believe, recur in men's minds not once or twice but again and again.

Evil draws men together.