Knowledge is power. Information is liberating. Education is the premise of progress, in every society, in every family.

An investment in knowledge pays the best interest.

The fullness of knowledge only comes through the awareness of ignorance.

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

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

My weapon is literature

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

If you can't explain it simply, you don't understand it well enough.

If I could explain it to the average person, I wouldn't have been worth the Nobel Prize.

A child miseducated is a child lost.

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

Don't worry that children never listen to you; worry that they are always watching you.

A little knowledge is a dangerous thing. So is a lot.

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

The progressive development of man is vitally dependent on invention.

I think that kids have a greater capacity for processing things than we give them credit for.

A cynic is a man who knows the price of everything, and the value of nothing.

The man who is fond of books is usually a man of lofty thought, and elevated opinions.

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

If the facts don't fit the theory, change the facts.

What sculpture is to a block of marble, education is to a human soul.