144 Quotes by Niels Bohr

Those who are not shocked when they first come across quantum theory cannot possibly have understood it.

Everything we call real is made of things that cannot be regarded as real.

The very nature of the quantum theory ... forces us to regard the space-time coordination and the claim of causality, the union of which characterizes the classical theories, as complementary but exclusive features of the description, symbolizing the idealization of observation and description, respectively.

Prediction is very difficult, especially about the future.

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

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

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

Stop telling God what to do with his dice.

I feel personally responsible for the universe's inevitable heat death.