In our description of nature the purpose is not to disclose the real essence of the phenomena but only to track down, so far as it is possible, relations between the manifold aspects of our experience.

Accuracy and clarity of statement are mutually exclusive.

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

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

If you aren't confused by quantum mechanics, you haven't really understood it.

If we couldn't laugh at ourselves, that would be the end of everything.

Opposites are not contradictory but complementary.