Industrialize or perish.

What is now proved was once only imagined.

Real knowledge is to know the extent of one's ignorance.

Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.

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

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

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.

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

Science is what we have learned about how to keep from fooling ourselves.

Intelligence plus character-that is the goal of true education.

The idea is to try to give all the information to help others to judge the value of your contribution; not just the information that leads to judgment in one particular direction or another.

He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying.

Better know nothing than half-know many things.

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.

It is not enough for the teacher to love the child. She must first love and understand the universe. She must prepare herself, and truly work at it.

There is no authority who decides what is a good idea.

The progressive development of man is vitally dependent on invention.

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

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

The most important part of teaching is to teach what it is to know.

The books that the world calls immoral are books that show the world its own shame.