An expert is a person who has made all the mistakes that can be made in a very narrow field.

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

The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth.

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

Anyone who is not shocked by quantum theory has not understood it.

The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth.

Prediction is very difficult, especially about the future.

The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth.