Of course, we must begin with what is known; but then this is of two kinds, what we do know, and what we may know:5 perhaps then as individuals we must begin with what we do 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.
Chapter III.
But to return from this digression.
Now of the Chief Good (i.e. of Happiness) men seem to form their notions from the different modes of life, as we might naturally expect: the many and most low conceive it to be pleasure, and hence they are content with the life of sensual enjoyment. For there are three lines of life which stand out prominently to view: that just mentioned, and the life in society, and, thirdly, the life of contemplation.
Now the many are plainly quite slavish, choosing a life like that of brute animals: yet they obtain some consideration, because many of the great share the tastes of Sardanapalus. The refined and active again conceive it to be honour: for this may be said to be the end of the life in society: yet