To begin with the wine jar in learning the potter's art.

And what, Socrates, is the food of the soul? Surely, I said, knowledge is the food of the soul.

Athenian men, I respect and love you, but I shall obey the god rather than you.

As the government is, such will be the man.

I can show you that the art of calculation has to do with odd and even numbers in their numerical relations to themselves and to each other.

God is a geometrician.

The only real ill-doing is the deprivation of knowledge.