There is only one universal passion fear.

What we want is to see the child in pursuit of knowledge, and not knowledge in pursuit of the child.

Rich men without convictions are more dangerous in modern society than poor women without chastity.

I ... must continue to strive for more knowledge and more power, though the new knowledge always contradicts the old and the new power is the destruction of the fools who misuse it.

We want a few mad people now. See where the sane ones have landed us!

Man is the only animals of which I am thoroughly and cravenly afraid.

Schools and schoolmasters, as we have them today, are not popular as places of education and teachers, but rather prisons and turnkeys in which children are kept to prevent them disturbing and chaperoning their parent.