Plato's Theaetetus 148-50:

Theaetetus: I can assure you, Socrates, that I have often tried to think this out, when I have heard reports of the questions you ask. But I can never persuade myself that I have a satisfactory answer to give, . . . . and I cannot stop worrying about it.

Socrates: These are the pangs of labor, my dear Theaetetus. It is because you have something within you which you are bringing to birth.

Theaetetus: I don't know about that, Socrates; I'm only telling you what's happened to me.

Socrates: Then do you mean to say that you've never heard about my being the son of a good sturdy midwife, Phaenarete, whose name means 'she who brings virtue to light'?

Theaetetus: Oh, yes, I've heard that before.

Socrates: And haven't you ever been told that I practice the same art myself?

Theaetetus: No, I certainly have not.

Socrates: But I do, believe me. Only don't give me away to the rest of the world, will you? You see, my friend, it is a secret that I have this art. That is not one of the things you hear people saying about me, because they don't know; but they do say that I am a very odd sort of person, always causing people to get into difficulties.... But other people discover within themselves a multitude of beautiful things, which they bring forth into the light. And it is I, with divine help, who deliver them of this offspring.