It is what you read when you don't have to that determines what you will be when you can't help it.

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

I learned very early the difference between knowing the name of something and knowing something.

Those who fail to learn the lessons of history are doomed to repeat them.

It isn't what we don't know that gives us trouble, it's what we know that ain't so.

I don't look on poetry as closed works. I feel they're going on all the time in my head and I occasionally snip off a length.

A little knowledge that acts is worth infinitely more than much knowledge that is idle.

All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.

The most savage controversies are those about matters as to which there is no good evidence either way.

You can never be overdressed or overeducated.

Industrialize or perish.

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

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

Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.

The schools ain't what they used to be and never was.

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

I do not know how to teach philosophy without becoming a disturber of the peace.

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

The only good is knowledge and the only evil is ignorance.

Liberty without Learning is always in peril and Learning without Liberty is always in vain.

Books are as useful to a stupid person as a mirror is useful to a blind person.