The progressive development of man is vitally dependent on invention.

It took us three years to build the NeXT computer. If we'd given customers what they said they wanted, we'd have built a computer they'd have been happy with a year after we spoke to them - not something they'd want now.

Reading without reflecting is like eating without digesting.

The white man is very clever. He came quietly and peaceably with his religion. We were amused at his foolishness and allowed him to stay. Now he has won our brothers, and our clan can no longer act like one. He has put a knife on the things that held us together and we have fallen apart.

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

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

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

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

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

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

Learning gives creativity, Creativity leads to thinking, Thinking provides knowledge, Knowledge makes you great.

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

Learning never exhausts the mind.

Educate the children and it won't be necessary to punish the men.

A child miseducated is a child lost.

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

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

In mathematics you don't understand things. You just get used to them.

When you know better you do better.

Language is courage: the ability to conceive a thought, to speak it, and by doing so to make it true.

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.