But nevertheless happiness plainly requires external goods too, as we said; for it is impossible, or at least not easy, to act nobly without some furniture of fortune. There are many things that can only be done through instruments, so to speak, such as friends and wealth and political influence: and there are some things whose absence takes the bloom off our happiness, as good birth, the blessing of children, personal beauty; for a man is not very likely to be happy if he is very ugly in person, or of low birth, or alone in the world, or childless, and perhaps still less if he has worthless children or friends, or has lost good ones that he had.

As we said, then, happiness seems to stand in need of this kind of prosperity; and so some identify it with good fortune, just as others identify it with excellence.

This has led people to ask whether happiness is attained by learning, or the formation of habits, or any other kind of training, or comes by some divine dispensation or even by chance.