Eudemian Ethics (1.1.6-1.2.2)

Now it is pretty clear that the presence of happiness is bestowed upon men by all of these things, or by some or one of them; for almost all the modes in which it is produced fall under these principles, inasmuch as all the acts that spring from thought may be included with those that spring from knowledge.

But to be happy and to five blissfully and finely may consist chiefly in three things deemed to be most desirable: some people say that Wisdom[*] is the greatest good, others Goodness[*] and others Pleasure.

And certain persons debate about their importance in relation to happiness,

Having then in regard to this subject established that everybody able to live according to his own purposive choice should set before him some object for noble living to aim at[*]—either honor or else glory or wealth or culture—on which he will keep his eyes fixed in all his conduct (since clearly it is a mark of much folly not to have one’s life regulated with regard to some End),

it is therefore most necessary first to decide within oneself, neither hastily nor carelessly, in which of the things that belong to us the good life consists, and what are the indispensable conditions for men’s possessing it. For there is a distinction between health and the things that are indispensable conditions of health,