Do I know that you are my father? Let us take the question to pieces, as Melesigenes would say. First, then, we must inquire what is knowledge? Secondly, what is a father? Now, knowledge, as Socrates said the other day to Theætetus,—-(1)

(1) See Plato’s Theætetus.

CALLIDEMUS.

Socrates! what! the ragged flat-nosed old dotard, who walks about all day barefoot, and filches cloaks, and dissects gnats, and shoes(1) fleas with wax?

SPEUSIPPUS.

All fiction! All trumped up by Aristophanes!

CALLIDEMUS.

By Pallas, if he is in the habit of putting shoes on his fleas, he is kinder to them than to himself. But listen to me, boy; if you go on in this way, you will be ruined. There is an argument for you. Go to your Socrates and your Melesigenes, and tell them to refute that. Ruined! Do you hear?

SPEUSIPPUS.

Ruined!