“It is the hallmark of any deep truth that its negation is also a deep truth.”

Address to Albert Einstein: You are not thinking. You are merely being logical.

When it comes to atoms, language can be used only as in poetry.

There are some things so serious you have to laugh at them.

One must always do what one really cannot.

There is no hope for any speculation that does not look absurd at first glance.

The opposite of a fact is falsehood, but the opposite of one profound truth may very well be another profound truth.

If anybody says he can think about quantum physics without getting giddy, that only shows he has not understood the first thing about them.

If we couldn’t laugh at ourselves, that would be the end of everything.

An expert is a man who has made all the mistakes which can be made, in a narrow field.

Physics is the belief that a simple and consistent description of nature is possible.

Some subjects are so serious that one can only joke about them.

Sometimes the child in one behaves a certain way and the rest of oneself follows behind, slowly shaking its head.

It is, indeed, perhaps the greatest prospect of humanistic studies to contribute through an increasing knowledge of the history of cultural development to that gradual removal of prejudices which is the common aim of all science.

We all know your idea is crazy. The question is whether it is crazy enough.

When it comes to atoms, language can be used only as in poetry. The poet, too, is not nearly so concerned with describing facts as with creating images and establishing mental connections.

Every great and deep difficulty bears in itself its own solution. It forces us to change our thinking in order to find it.

People who feel like sunshine have walked more in the rain than basked in the sun.

Music is well said to be the speech of angels.

Life is not a matter of holding good cards, but sometimes, playing a poor hand well.

With work and life, your true depth can become an alien thing to you. Your gut feelings, your instincts become buried.

If there were no thunder, men would have little fear of lightning.

I want people to find their inner depth.

The easiest thing to exist, love. The most rare feeling, love. Irony?

It is well-known that the friend of a conqueror is but the last victim.