If, then, it is thought that unexpected success is due to chance, but that, if it is through chance that one is fortunate, the cause of his fortune is not the sort of cause that produces always or usually the same result further, if a person succeeds or fails because he is a certain sort of man, just as a man sees badly because he is blue eyed, then it follows that not fortune but nature is the cause; the man then is not fortunate but rather naturally gifted.