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.

No paradox, no progress.

It is wrong to think that the task of physics is to find out how nature is. Physics concerns what we say about nature.

The opposite of a fact is falsehood, but the opposite of one profound truth may very 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.

The opposite of every great idea is another great idea.

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