An investment in knowledge pays the best interest.

The reading of all good books is like conversation with the finest men of past centuries.

It is not enough for the teacher to love the child. She must first love and understand the universe. She must prepare herself, and truly work at it.

The real solution lies in a world in which charity will have become unnecessary.

Science is a way of thinking much more than it is a body of knowledge.

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

You can never be overdressed or overeducated.

Science is what we have learned about how to keep from fooling ourselves.

I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.

Science is a rising force, It is creating a new world about us. It needs to be watched and pressed into service, and in any case, it would be courting disaster to ignore it.

Words can be like X-rays if you use them properly - they'll go through anything. You read and you?re pierced.

Imagination is the source of every form of human achievement. And it's the one thing that I believe we are systematically jeopardizing in the way we educate our children and ourselves.

Imagination is more important than knowledge.

Patience is a virtue, and I'm learning patience. It's a tough lesson.

There is nothing more awful, insulting, and depressing than banality.

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

Reading is to the mind what exercise is to the body.

The task of a writer is not to solve the problem but to state the problem correctly.

If help and salvation are to come, they can only come from the children, for the children are the makers of men.

Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.

I am so clever that sometimes I don't understand a single word of what I am saying.