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

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.

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

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.

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.

Science is like sex: sometimes something useful comes out, but that is not the reason we are doing it.

I’d hate to die twice. It’s so boring.

I a universe of atoms, an atom in the universe.

Nature has a great simplicity and therefore a great beauty

I don’t feel frightened by not knowing things, by being lost in a mysterious universe without any purpose, which is the way it really is, as far as I can tell. Possibly. It doesn’t frighten me.

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.

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.