Nicomachean Ethics

And now, resuming the statement with which we commenced, since all knowledge and moral choice grasps at good of some kind or another, what good is that which we say πολιτικὴ aims at? or, in other words, what is the highest of all the goods which are the objects of action?

So far as name goes, there is a pretty general agreement: for HAPPINESS both the multitude and the refined few call it, and “living well” and “doing well” they conceive to be the same with “being happy;” but about the Nature of this Happiness, men dispute, and the multitude do not in their account of it agree with the wise. For some say it is some one of those things which are palpable and apparent, as pleasure or wealth or honour; in fact, some one thing, some another; nay, oftentimes the same man gives a different account of it; for when ill, he calls it health; when poor, wealth: and conscious of their own ignorance, men admire those who talk grandly and above their comprehension. Some again held it to be something by itself, other than and beside these many good things, which is in fact to all these the cause of their being good.

Now to sift all the opinions would be perhaps rather a fruitless task; so it shall suffice to sift those which are most generally current, or are thought to have some reason in them.

And here we must not forget the difference between reasoning from principles, and reasoning to principles: for with good cause did Plato too doubt about this, and enquire whether the right road is from principles or to principles, just as in the racecourse from the judges to the further end, or .

Of course, we must begin with what is known; but then this is of two kinds, what we know, and what we know:[5] perhaps then as individuals we must begin with what we know. Hence the necessity that he should have been well trained in habits, who is to study, with any tolerable chance of profit, the principles of nobleness and justice and moral philosophy generally. For a principle is a matter of fact, and if the fact is sufficiently clear to a man there will be no need in addition of the reason for the fact. And he that has been thus trained either has principles already, or can receive them easily: as for him who neither has nor can receive them, let him hear his sentence from Hesiod:

He is best of all who of himself conceiveth all things; Good again is he too who can adopt a good suggestion; But whoso neither of himself conceiveth nor hearing from another Layeth it to heart;—he is a useless man.