• Nicomachean Ethics 1098b29ff
    • With those who identify happiness with excellence or some one excellence our account is in harmony; for to excellence belongs activity in accordance with excellence. But it makes, perhaps, no small difference whether we place the chief good in possession or in use, in state or in activity. For the state may exist without producing any good result, as in a man who is asleep or in some other way quite inactive, but the activity cannot; for one who has the activity will of necessity be acting, and acting well....so those who act rightly win the noble and good things in life.
    • Their life is also in itself pleasant. For pleasure is a state of soul, and to each man that which he is said to be a lover of is pleasant; e.g. not only is a horse pleasant to the lover of horses, and a spectacle to the lover of sights, but also in the same way just acts are pleasant to the lover of justice and in general excellent acts to the lover of excellence. Now for most men their pleasures are in conflict with one another  because these are not by nature pleasant, but the lovers of what is noble find pleasant the things that are by nature pleasant; and excellent actions are such, so that these are pleasant for such men as well as in their own nature. Their life, therefore, has no further need of pleasure as a sort of adventitious charm, but has its pleasure in itself. For, besides what we have said, the man who does not rejoice in noble actions is not even good; since no one would call a man just who did not enjoy acting justly, nor any man liberal who did not enjoy liberal actions; and similarly in all other caes. If this is so, excellent actions must be in themselves pleasant. But they are also good and noble, and have each of these attributes in the highest degree, since the good man judges well about these attributes and he judges in the way we have described. Happiness then is the best, noblest, and most pleasant thing.