Each ray of light moves in the coordinate system 'at rest' with the definite, constant velocity V independent of whether this ray of light is emitted by a body at rest or a body in motion.

The legs are the wheels of creativity.

It is the theory which decides what we can observe

Figuring out how to think about the problem.

Those who believe that politics and religion do not mix, understand neither.

If I can't picture it, I can't understand it.

Quantum mechanics is certainly imposing. But an inner voice tells me that this is not yet the real thing. The theory says a lot, but does not bring us any closer to the secrets of the "Old One." I, at any rate, am convinced that He is not playing at dice.