Then you panic. You turn pale. You immediately shout, 'I'll show him who I am! I'll prove I'm a great philosopher!' But these very reactions prove what you are. Why do you need to prove it through other methods? Don't you know how Diogenes exposed one of the sophists? He just held up his middle finger at him. When the man flew into a rage, Diogenes said, 'There he is — I've pointed him out to you.' You can't point to a person the way you point to a stone or a piece of wood. When someone reveals a person's principles, that's when they truly show you who that person is.
then you are confounded, you grow pale, you cry out immediately, I will show him who I am, that I am a great philosopher. It is seen by these very things: why do you wish to show it by others? Do you not know that Diogenes pointed out one of the sophists in this way by stretching out his middle finger? And then when the man was wild with rage, This, he said, is the certain person: I have pointed him out to you. For a man is not shown by the finger, as a stone or a piece of wood; but when any person shows the man's principles, then he shows him as a man.