A state of the soul is either (1) an emotion, (2) a capacity, or (3) a disposition; virtue therefore must be one of these three things.

Authority is no source for Truth.

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 the first place, then, men should guard against the beginning of change, and in the second place they should not rely upon the political devices of which I have already spoken invented only to deceive the people, for they are proved by experience to be useless.

If happiness is activity in accordance with excellence, it is reasonable that it should be in accordance with the highest excellence.

The Good of man is the active exercise of his soul's faculties in conformity with excellence or virtue, or if there be several human excellences or virtues, in conformity with the best and most perfect among them.

It is possible to fail in many ways...while to succeed is possible only in one way.