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

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.

I don't know if you ever really feel like you've made it.

Man, alone, has the power to transform his thoughts into physical reality; man, alone, can dream and make his dreams come true.

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