In mathematics you don't understand things. You just get used to them.

The deepest sin against the human mind is to believe things without evidence.

Don't learn to do, but learn in doing.

If one cannot enjoy reading a book over and over again, there is no use in reading it at all.

Seek knowledge from the cradle to the grave.

The progressive development of man is vitally dependent on invention.

In order to stave off covetouness, greed, and spite, citizens world over must be educated.

The first principle is that you must not fool yourself and you are the easiest person to fool.

If you're teaching today what you were teaching five years ago, either the field is dead or you are.

Evil being the root of mystery, pain is the root of knowledge.

Education is the most powerful weapon which you can use to change the world.

I like poems you can tack all over with a hammer and there are no hollow places.

For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.

Human behavior flows from three main sources: desire, emotion, and knowledge

Intelligence plus character-that is the goal of true education.

There is nothing more notable in Socrates than that he found time, when he was an old man, to learn music and dancing, and thought it time well spent.

The man who does not read good books has no advantage over the man who can't read them.

Civilization is a race between disaster and education.

Courage, conviction and confidence.

Don't worry that children never listen to you; worry that they are always watching you.

Imagination is more important than knowledge.