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

An investment in knowledge pays the best interest.

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.

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.

What is now proved was once only imagined.

Science is not only a disciple of reason but, also, one of romance and passion.

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

Study without desire spoils the memory, and it retains nothing that it takes in.

I do not know how to teach philosophy without becoming a disturber of the peace.

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

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

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

What sculpture is to a block of marble, education is to a human soul.

The progressive development of man is vitally dependent on invention.

Education is a system of imposed ignorance.

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

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

Necessity is the mother of invention.

Dare to think for yourself.

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

The task of a writer is not to solve the problem but to state the problem correctly.