Each living creature is said to be alive and to be the same individual - as for example someone is said to be the same person from when he is a child until he comes to be an old man. And yet, if he's called the same, that's despite the fact that he's never made up from the same things, but is always being renewed, and losing what he had before, whether it's hair, or flesh, or bones, or blood, in fact the whole body.

And when one of them meets the other half, the actual half of himself, whether he be a lover of youth or a lover of another sort, the pair are lost in an amazement of love and friendship and intimacy and one will not be out of the other's sight, as I may say, even for a moment.

Education is teaching our children to desire the right things.

The knowledge of which geometry aims is the knowledge of the eternal.

I fast for greater physical and mental efficiency

It is correct to make a priority of young people, taking care that they turn out as well as possible.

To fear death, my friends, is only to think ourselves wise without really being wise, for it is to think that we know what we do not know.