Prof. Feynman

If you're not having fun, you're not learning. There's a pleasure in finding things out.

Simplicity isn't the lack of complexity; it's the clarity of understanding.

Nature uses only the longest threads to weave her patterns, so that each small piece of her fabric reveals the organization of the entire tapestry.

The scientist has a lot of experience with ignorance and doubt and uncertainty, and this experience is of very great importance, I think. When a scientist doesn't know the answer to a problem, he is ignorant. When he has a hunch as to what the result is, he is uncertain. And when he is pretty darn sure of what the result is going to be, he is in some doubt. We have found it of paramount importance that in order to progress we must recognize our ignorance and leave room for doubt. Scientific knowledge is a body of statements of varying degrees of certainty — some most unsure, some nearly sure, but none absolutely certain.

I think I can safely say that nobody understands quantum mechanics.

Nature is quantum mechanical.

Learning is like peeling an onion— each layer reveals another layer, and occasionally, it makes you cry.

Teaching a powerful tool for learning.

Progress in science comes when experiments contradict theory.

If you think you can, you may. If you think you can't, you're right.

A scientist is never certain.

One of the biggest and most important tools of theoretical physics is the wastebasket.

There is no harm in doubt and skepticism, for it is through these that new discoveries are made.

Nature’s imagination is so much greater than man’s.

The only way to deep happiness is to do something you love to the best of your ability.

It requires a much higher degree of imagination to understand the electromagnetic field than to understand invisible angels.

I'm not going to simplify it, I'm going to tell you what it really is like, and I hope you accept nature as she is - absurd. You don't like it? Go find another Universe!

Question every assumption you make.

Those who cannot think for themselves are truly lost.

The first rule of learning is to admit you don’t know. The second rule is to never stop asking why.

Be a free thinker and don't accept everything you hear as truth. Be critical and evaluate what you believe in. -- Aristotle (384 - 322 BC)