God may be subtle, but he isn't plain mean.

Isn't it strange that I who have written only unpopular books should be such a popular fellow?

All these primary impulses, not easily described in words, are the springs of man's actions. 

There could be no fairer destiny for any physical theory than that it should point the way to a more comprehensive theory in which it lives on as a limiting case. 

One may say the eternal mystery of the world is its comprehensibility.

It was the experience of mystery - even if mixed with fear - that engendered religion.

It was the experience of mystery - even if mixed with fear - that engendered religion.

It stands to the everlasting credit of science that by acting on the human mind it has overcome man's insecurity before himself and before nature.

I shall never believe that God plays dice with the world.

God does not play dice.

I am enough of an artist to draw freely on my imagination.

I have just got a new theory of eternity.

One strength of the communist system of the East is that it has some of the character of a religion and inspires the emotions of a religion.

You ask me if I keep a notebook to record my great ideas. I've only ever had one.

There comes a time when the mind takes a higher plane of knowledge but can never prove how it got there.

Most of the fundamental ideas of science are essentially simple, and may, as a rule, be expressed in a language comprehensible to everyone.

Morality is of the highest importance - but for us, not for God.

The unleashed power of the atom has changed everything save our modes of thinking and we thus drift toward unparalleled catastrophe.

The devil has put a penalty on all things we enjoy in life. Either we suffer in health or we suffer in soul or we get fat.

Heroism on command, senseless violence, and all the loathsome nonsense that goes by the name of patriotism - how passionately I hate them!

It is my conviction that killing under the cloak of war is nothing but an act of murder.

Sometimes one pays most for the things one gets for nothing.

God always takes the simplest way.

The release of atomic energy has not created a new problem. It has merely made more urgent the necessity of solving an existing one.

I do not believe in the God of theology who rewards good and punishes evil.

Force always attracts men of low morality.

It gives me great pleasure indeed to see the stubbornness of an incorrigible nonconformist warmly acclaimed.

Few people are capable of expressing with equanimity opinions which differ from the prejudices of their social environment. Most people are even capable of forming such opinions.

If I were not a physicist, I would probably be a musician. I often think in music. I live my daydreams in music. I see my life in terms of music.

Human beings must have action; and they will make it if they cannot find it.