There are trivial truths and the great truths. The opposite of a trivial truth is plainly false. The opposite of a great truth is also true.

We are all agreed that your theory is crazy. The question which divides us is whether it is crazy enough to have a chance of being correct. My own feeling is that it is not crazy enough.

Sometimes the child in one behaves a certain way and the rest of oneself follows behind, slowly shaking its head.

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

It is, indeed, perhaps the greatest prospect of humanistic studies to contribute through an increasing knowledge of the history of cultural development to that gradual removal of prejudices which is the common aim of all science.

Opposites are not contradictory but complementary.

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.