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

You can never be overdressed or overeducated.

A man who has never gone to school may steal a freight car; but if he has a university education, he may steal the whole railroad.

I cannot live without books.

Education is the kindling of a flame, not the filling of a vessel.

Opinion is the medium between knowledge and ignorance.

My weapon is literature

No power and no treasure can outweigh the extension of our knowledge.

Reading without reflecting is like eating without digesting.

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

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.

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

I am a part of everything that I have read.

A child miseducated is a child lost.

If I have seen further it is by standing on the shoulders of Giants.

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

Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.

Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.

They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.

I prefer the company of peasants because they have not been educated sufficiently to reason incorrectly.

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