You can recognize a small truth because its opposite is a fa... - Niels Bohr

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

"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."

"Stop telling God what to do with his dice."

"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."