Whatever else there may be in our nature, responsibility toward truth is one of its attributes.

The idea of a universal mind or Logos would be, I think, a fairly plausible inference from the present state of scientific theory.

In the most modern theories of physics probability seems to have replaced aether as "the nominative of the verb 'to undulate'."

If someone points out to you that your pet theory of the universe is in disagreement with Maxwell's equations - then so much the worse for Maxwell's equations. If it is found to be contradicted by observation - well, these experimentalists do bungle things sometimes. But if your theory is found to be against the second law of thermodynamics I can give you no hope; there is nothing for it but to collapse in deepest humiliation.

Schrödinger's wave-mechanics is not a physical theory, but a dodge - and a very good dodge too.

We used to think that if we knew one, we knew two, because one and one are two. We are finding that we must learn a great deal more about 'and'.

What we makes of the world must be largely dependent on the sense-organs that we happen to possess. How the world must have changed since the man came to rely on his eyes rather than his nose.