Never help a child with a task at which he feels he can succeed.

The man who does not read good books has no advantage over the man who can't read them.

Dare to think for yourself.

The ability to observe without evaluating is the highest form of intelligence.

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.

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

If the facts don't fit the theory, change the facts.

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

If I have seen further it is by standing on the shoulders of Giants.

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

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.

Don't learn to do, but learn in doing.

Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.

Show me a family of readers, and I will show you the people who move the world.

With educated people, I suppose, punctuation is a matter of rule; with me it is a matter of feeling. But I must say I have great respect for the semi-colon; it's a useful little chap.

A thought is an idea in transit.

When you know better you do better.

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.

Education is our passport to the future, for tomorrow belongs to the people who prepare for it today.

Books are for people who wish they were somewhere else.

To every action there is always an equal and opposite or contrary, reaction