Matter tells space how to curve, space tells matter how to move.

If you've never done anything wrong it's probably because you have never tried anything new.

Kada sedite sat vremena kraj lepe devojke, to prodje kao minut. Sedite minut na vrelu pec i to ce trajati kao sat. To se zove relativitet.

Something deeply hidden had to be behind things.

Since the mathematicians have invaded the theory of relativity, I do not understand it myself anymore.

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?