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

Just when I thought there wasn't room enough for another thought in my head, I had this great idea.

My weapon is literature

My alma mater was books, a good library.... I could spend the rest of my life reading, just satisfying my curiosity.

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

It is possible to fly without motors, but not without knowledge and skill.

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

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.

An investment in knowledge pays the best interest.

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

To read is to fly: it is to soar to a point of vantage which gives a view over wide terrains of history, human variety, ideas, shared experience and the fruits of many inquiries.

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

To educate a person in the mind but not in morals is to educate a menace to society.

The delight of opening a new pursuit, or a new course of reading, imparts the vivacity and novelty of youth even to old age.

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

The great difficulty in education is to get experience out of ideas.

I am so clever that sometimes I don't understand a single word of what I am saying.

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

The highest activity a human being can attain is learning for understanding, because to understand is to be free.

Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.