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

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

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

The deepest sin against the human mind is to believe things without evidence.

Education is the ability to listen to almost anything without losing your temper or your self-confidence.

The first principle is that you must not fool yourself and you are the easiest person to fool.

Words can be like X-rays if you use them properly - they'll go through anything. You read and you?re pierced.

The highest result of education is tolerance.

For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.

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

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.

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

Just because I don't care doesn't mean I don't understand.

The knowledge of all things is possible

What we know is a drop, what we don't know is an ocean.

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

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

Education is a human right with immense power to transform. On its foundation rest the cornerstones of freedom, democracy and sustainable human development.

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

The fullness of knowledge only comes through the awareness of ignorance.

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