An investment in knowledge pays the best interest.

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

My weapon is literature

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

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.

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

I cannot live without books.

Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.

Better know nothing than half-know many things.

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.

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

To educate a person in the mind but not in morals is to educate a menace to society.

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

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

The secret of life is not enjoyment but education through experience.

Opinion is the medium between knowledge and ignorance.

Just because I don't care doesn't mean I don't understand.

As we acquire more knowledge, things do not become more comprehensible but more mysterious.

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

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

The highest activity a human being can attain is learning for understanding, because to understand is to be free.