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

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.

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

Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.

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

Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.

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

Reading is to the mind what exercise is to the body.

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.

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.

I am indebted to my father for living, but to my teacher for living well.

If help and salvation are to come, they can only come from the children, for the children are the makers of men.

Technology is just a tool. In terms of getting the kids working together and motivating them, the teacher is the most important.

It isn't what we don't know that gives us trouble, it's what we know that ain't so.

We could never learn to be brave and patient, if there were only joy in the world

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

Necessity is the mother of invention.

Science is a way of thinking much more than it is a body of knowledge.

The highest result of education is tolerance.

Liberty without Learning is always in peril and Learning without Liberty is always in vain.

Courage, conviction and confidence.