The present situation in physics is as if we know chess, but we don't know one or two rules.

If you think you understand quantum mechanics, you don't understand quantum mechanics.

Our responsibility is to do what we can, learn what we can, improve the solutions, and pass them on.

It doesn't matter how beautiful your theory is, it doesn't matter how smart you are. If it doesn't agree with experiment, it's wrong.

If you can't explain something to a first year student, then you haven't really understood .

God was invented to explain mystery. God is always invented to explain those things that you do not understand.

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.

My rule is, when you are unhappy, think about it. But when you're happy, don't. Why spoil it? You're probably happy for some ridiculous reason and you'd just spoil it to know it.

Religion is a culture of faith; science is a culture of doubt.

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

Einstein was a giant. His head was in the clouds, but his feet were on the ground. But those of us who are not that tall have to choose!

As for you Rose Tyler you gave up on me! That's rude. Is all I am rude and not ginger?" The Doctor

A good heart is a universal key that opens the door of the unthinkable gate of goodness

If it reenters its base, I have a rule to cut at least 50 percent of the position.

Death, like the sun, cannot be looked at steadily.

Work is not always required. There is such a thing as sacred idleness.

To tell a man who has no realization that he is lost, that he may be saved by faith in Christ, means nothing to him, however true and blessed the fact is in itself.

The powers of a man's mind are directly proportional to the quantity of coffee he drank.

Artificial Intelligence is whatever hasn't been done yet.

Do not be fooled by one who recites the Qurân. His recitation is but speech – but look to those who act according to it.

The crime of taxation is not in the taking it, it's in the way that it's spent.