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.

Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.

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

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

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

I think that kids have a greater capacity for processing things than we give them credit for.

The man who is fond of books is usually a man of lofty thought, and elevated opinions.

The knowledge of all things is possible

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

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

Knowing is not enough; we must apply. Willing is not enough; we must do.

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

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.

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.

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

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

It is beyond a doubt that all our knowledge begins with experience.

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

Imagination is more important than knowledge.

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

Industrialize or perish.