Excellence, then, is a state concerned with choice, lying in a mean, relative to us, this being determined by reason and in the way in which the man of practical wisdom would determine it.

... There must then be a principle of such a kind that its substance is activity.

Consider pleasures as they depart, not as they come.

The physician heals, Nature makes well.

Greed has no boundaries

Leisure of itself gives pleasure and happiness and enjoyment of life, which are experienced, not by the busy man, but by those who have leisure.

The pleasures arising from thinking and learning will make us think and learn all the more. 1153a 23