But the Aristotelians lay it down, that to live in accordance with virtue is the end, but that neither happiness nor the end is reached by every one who has virtue. For the wise man, vexed and involved in involuntary mischances, and wishing gladly on these accounts to flee from life, is neither fortunate nor happy. For virtue needs time; for that is not acquired in one day which exists [only] in the perfect man; since, as they say, a child is never happy. But human life is a perfect time, and therefore happiness is completed by the three kinds of good things. Neither, then, the poor, nor the mean, nor even the diseased, nor the slave, can be one of them.