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

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.

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

Only a fool learns from his own mistakes. The wise man learns from the mistakes of others.

It is better to be silent, than to dispute with the Ignorant.

I was such a fool to fall for all the lies you told me.

A fool is known by his speech; and a wise man by silence.

One has to be insincere and promise something which you cannot fulfill. So you either have to be a fool who does not understand what you are promising, or deliberately be lying.

Only a fool lets somebody else tell him who his enemy is – never let your enemies choose your enemies for you.

Only fools don’t contradict themselves.

Follow the rules or follow the fools.