I know that I am intelligent, because I know that I know nothing.

I knew I belonged to the public and to the world, not because I was talented or even beautiful, but because I had never belonged to anything or anyone else.

Those who educate children well are more to be honored than they who produce them; for these only gave them life, those the art of living well.

Man is the only creature that refuses to be what he is.

Let us permit nature to have her way. She understands her business better than we do.