Einstein, stop telling God what to do!
The best weapon of a dictatorship is secrecy, but the best weapon of a democracy should be the weapon of openness.
No, no, you’re not thinking; you’re just being logical.
It is the hallmark of any deep truth that its negation is also a deep truth.
There are some things so serious you have to laugh at them.
If we couldn’t laugh at ourselves, that would be the end of everything.
Prediction is very difficult, especially if it’s about the future.
When we measure something we are forcing an undetermined, undefined world to assume an experimental value. We are not measuring the world, we are creating it.
If anybody says he can think about quantum physics without getting giddy, that only shows he has not understood the first thing about them.
Never express yourself more clearly than you are able to think.
Your theory is crazy, but it’s not crazy enough to be true.
How wonderful that we have met with a paradox. Now we have some hope of making progress.
Sometimes the child in one behaves a certain way and the rest of oneself follows behind, slowly shaking its head.
The meaning of life consists in the fact that it makes no sense to say that life has no meaning.
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.
What is that we human beings ultimately depend on? We depend on our words. We are suspended in language. Our task is to communicate experience and ideas to others.
Every valuable human being must be a radical and a rebel, for what he must aim at is to make things better than they are.
If an idea does not appear bizarre, there is no hope for it.
When searching for harmony in life one must never forget that in the drama of existence we are ourselves both actors and spectators.
The great extension of our experience in recent years has brought light to the insufficiency of our simple mechanical conceptions and, as a consequence, has shaken the foundation on which the customary interpretation of observation was based.