Dare to think for yourself.

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

The deepest sin against the human mind is to believe things without evidence.

When I am attacked by gloomy thoughts, nothing helps me so much as running to my books. They quickly absorb me and banish the clouds from my mind.

I cannot teach anybody anything. I can only make them think

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

An investment in knowledge pays the best interest.

Patience is a virtue, and I'm learning patience. It's a tough lesson.

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

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

No man's knowledge here can go beyond his experience.

I cannot live without books.

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

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

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

The more I read, the more I acquire, the more certain I am that I know nothing.

Real learning comes about when the competitive spirit has ceased.

Show me a family of readers, and I will show you the people who move the world.

Men are born ignorant, not stupid. They are made stupid by education.

The knowledge of all things is possible

What is now proved was once only imagined.