The farther backward you can look, the farther forward you can see. 

If Hitler invaded hell I would make at least a favourable reference to the devil in the House of Commons. 

I may be drunk, Miss, but in the morning I will be sober and you will still be ugly. 

Courage is what it takes to stand up and speak; courage is also what it takes to sit down and listen. 

A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty. 

I am fond of pigs. Dogs look up to us. Cats look down on us. Pigs treat us as equals. 

You can always count on Americans to do the right thing - after they've tried everything else. 

Never, never, never give up. 

To improve is to change; to be perfect is to change often. 

If you're going through hell, keep going. 

Now this is not the end. It is not even the beginning of the end. But it is, perhaps, the end of the beginning. 

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. 

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

I have just got a new theory of eternity.

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

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

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

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

Confusion of goals and perfection of means seems, in my opinion, to characterize your age.

Never lose a holy curiosity.

I do not believe in immortality of the individual, and I consider ethics to be an exclusively human concern with no superhuman authority behind it.  

There is no logical way to the discovery of these elemental laws. There is only the way of intuition, which is helped by a feeling for the order lying behind the appearance.  

Memory is deceptive because it is colored by today's events. 

The high destiny of the individual is to serve rather than to rule.

We shall require a substantially new manner of thinking if mankind is to survive. 

In order to be an immaculate member of a flock of sheep, one must above all be a sheep oneself.

I very rarely think in words at all. A thought comes, and I may try to express it in words afterwards.

Knowledge of what is does not open the door directly to what should be.

It is strange to be known so universally and yet to be so lonely.