“There are thousands of years in the past, and there is an unknown amount of time in the future. There are all kinds of opportunities, and there are all kinds of dangers.”

You see, I get so much fun out of thinking that I don’t want to destroy this pleasant machine that makes life such a big kick.

To every man is given the key to the gates of heaven. The same key opens the gates of hell.

Philosophers say a great deal about what is absolutely necessary for science, and it is always, so far as one can see, rather naive, and probably wrong.

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

Why nature is mathematical is, again, a mystery.

I think nature’s imagination Is so much greater than man’s, she’s never going to let us relax

I don’t know what’s the matter with people: they don’t learn by understanding; they learn by some other way—by rote, or something. Their knowledge is so fragile!

We are lucky to live in an age in which we are still making discoveries.

Everything is interesting if you go into it deeply enough

I don’t know what’s the matter with people: they don’t learn by understanding, they learn by some other way — by rote or something. Their knowledge is so fragile.

Physicists like to think that all you have to do is say, these are the conditions, now what happens next?

I love to think. I once considered taking drugs as an attempt to better understand an altered state of mind; however, I decided not to. I didn’t want to chance ruining the machine.

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

I learned very early the difference between knowing the name of something and knowing something.

Physics is like sex: sure, it may give some practical results, but that’s not why we do it.

You have to have absolute confidence. Keep right on going, and nothing will happen.