Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.

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

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

Physics is like sex: sure, it may give some practical results, but that's not why we do it.

Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.

The whole of science is nothing more than a refinement of everyday thinking.

Many much-learned men have no intelligence.

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

That men do not learn very much from the lessons of history is the most important of all the lessons that history has to teach.

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

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.

What we know is a drop, what we don't know is an ocean.

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

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

I have no special talents. I am only passionately curious.

Imagination is more important than knowledge.

A child educated only at school is an uneducated child.

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

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

If you're not learning while you're earning, you're cheating yourself out of the better portion of your compensation.