“One must always do what one really cannot.”

Your theory is crazy, but it’s not crazy enough to be true.

A deep truth is a truth so deep that not only is it true but it’s exact opposite is also true.

Accuracy and clarity of statement are mutually exclusive.

Never express yourself more clearly than you are able to think.

Our task is not to penetrate the essence of things, the meaning of which we do not know anyway, but rather to develop concepts which allow us to talk in a productive way about phenomena in nature

The opposite of every great idea is another great idea.

Einstein, stop telling God what to do!

Prediction is very difficult, especially if it’s about the future.

Anyone who can contemplate quantum mechanics without getting dizzy hasn’t understood it.

Nothing exists until it is measured.

It is not enough to be wrong, one must also be polite.

You must come to Copenhagen to work with us. We like people who can actually perform thought experiments!

No paradox, no progress.

There are trivial truths and the great truths. The opposite of a trivial truth is plainly false. The opposite of a great truth is also true.

Opposites are not contradictory but complementary.

The present state of atomic theory is characterized by the fact that we not only believe the existence of atoms to be proved beyond a doubt, but also we even believe that we have an intimate knowledge of the constituents of the individual atoms.

I am satisfied, I see, dance, laugh, sing.

You can’t go back and change the beginning, but you can start where you are and change the ending.

Desire is the starting point of all achievement, not a hope, not a wish, but a keen pulsating desire which transcends everything.

Make your life a dream, and a dream a reality.

I love to see a young girl go out and grab the world by the lapels. Life’s a bitch. You’ve got to go out and kick ass.

No man has the right to be an amateur in the matter of physical training. It is a shame for a man to grow old without seeing the beauty and strength of which his body is capable.

One finds one’s destiny on the path one takes to avoid it.

Greatness is never free; it must be earned.