“You can’t say A is made of B or vice versa. All mass is interaction.”

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.

What I cannot create, I do not understand.

Science is what we have learned about how to keep from fooling ourselves.

Science is the organized skepticism in the reliability of expert opinion.

For a successful technology, reality must take precedence over public relations, for nature cannot be fooled.

Nobody ever figures out what life is all about, and it doesn’t matter. Explore the world. Nearly everything is really interesting if you go into it deeply enough.

The first principle is that you must not fool yourself and you are the easiest person to fool.

I think we should teach them [the people] wonders and that the purpose of knowledge is to appreciate wonders even more.

I have no responsibility to live up to what others expect of me. That’s their mistake, not my failing.

Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.

I learned from my father to translate: everything I read I try to figure out what it really means, what it’s really saying.

The highest forms of understanding we can achieve are laughter and human compassion.

But there is nothing in biology yet found that indicates the inevitability of death.

A philosopher once said, It is necessary for the very existence of science that the same conditions always produce the same results. Well, they don’t!

I couldn’t claim that I was smarter than sixty-five other guys-but the average of sixty-five other guys, certainly!

Science is a way of trying not to fool yourself. The principle is that you must not fool yourself, and you are the easiest person to fool.

Every particle of matter is attracted by or gravitates to every other particle of matter with a force inversely proportional to the squares of their distances.

Creationists eagerly seek a gap in present-day knowledge or understanding. If an apparent gap is found, it is assumed that God, by default, must fill it.

Creationists eagerly seek a gap in present-day knowledge or understanding. If an apparent gap is found, it is assumed that God, by default, must fill it.

I don’t give a damn for anybody’s opinion, I only care about the facts. So I’m not an enthusiast for diversity of opinion where factual matters are concerned.

I don’t give a damn for anybody’s opinion, I only care about the facts. So I’m not an enthusiast for diversity of opinion where factual matters are concerned.

Freedom of thought is best promoted by the gradual illumination of men’s minds which follows from the advance of science.

We are a way for the cosmos to know itself.

I would give absolutely nothing for the theory of Natural Selection, if it requires miraculous additions at any one stage of descent.