If you want the present to be different from the past, study the past.

All stable processes we shall predict. All unstable processes we shall control.

Know what you are talking about.

What is now proved was once only imagined.

Make it a rule never to give a child a book you would not read yourself.

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

Any sufficiently advanced technology is indistinguishable from magic.

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

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

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.

Better know nothing than half-know many things.

The progressive development of man is vitally dependent on invention.

Technology is just a tool. In terms of getting the kids working together and motivating them, the teacher is the most important.

A cynic is a man who knows the price of everything, and the value of nothing.

Knowledge is power. Information is liberating. Education is the premise of progress, in every society, in every family.

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

The real solution lies in a world in which charity will have become unnecessary.

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.

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

If you're teaching today what you were teaching five years ago, either the field is dead or you are.

The only true wisdom is in knowing you know nothing.