While the finish given to our picture of the world by the theory of relativity has already been absorbed into the general scientific consciousness, this has scarcely occurred to the same extent with those aspects of the general problem of knowledge which have been elucidated by the quantum theory.
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. – 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. – Niels Bohr
Stop telling God what to do with his dice. – Niels Bohr
Every sentence I utter must be understood not as an affirmation but as a question.[A caution he gives his students, to be wary of dogmatism.] – Niels Bohr