The quest of the absolute leads into the four-dimensional world.

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

The mathematics is not there till we put it there.

The word reality frightens me.

Asked in 1919 whether it was true that only three people in the world understood the theory of general relativity, [Eddington] allegedly replied: "Who's the third?"

Science is one thing, wisdom is another. Science is an edged tool, with which men play like children, and cut their own fingers.

Don't believe the results of experiments until they're confirmed by theory.