Know what you are talking about.

The whole of science is nothing more than a refinement of everyday thinking.

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

Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.

Real learning comes about when the competitive spirit has ceased.

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

Many much-learned men have no intelligence.

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.

The reading of all good books is like conversation with the finest men of past centuries.

One test of the correctness of educational procedure is the happiness of the child.

All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.

Books are as useful to a stupid person as a mirror is useful to a blind person.

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

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

A man who has never gone to school may steal a freight car; but if he has a university education, he may steal the whole railroad.

Science is not only a disciple of reason but, also, one of romance and passion.

Human behavior flows from three main sources: desire, emotion, and knowledge

Learning never exhausts the mind.

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

Suddenly degrees aren't worth anything. Isn't that true? When I was a student, if you had a degree, you had a job. If you didn't have a job it's because you didn't want one. And I didn't want one, frankly.

Knowing others is wisdom, knowing yourself is Enlightenment.