If you aren't confused by quantum mechanics, you haven't really understood it.

When searching for harmony in life one must never forget that in the drama of existence we are ourselves both actors and spectators.

Some things are so serious, they can only be joked about.

A person who wasn't outraged on first hearing about quantum theory didn't understand what had been said.

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

Nothing exists until it is measured.

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.