"The quantum theory is an 'unpleasant' theory, which I should have liked to assume to be true only if I were forced to do so by the facts."

"A theoretical science, like any other human activity, is entirely a matter of taste."

"I am no friend of probability theory, I have hated it from the first moment when our dear friend Max Born gave it birth."

"The world is a stage, and we are merely players."

"The greatest discovery of all is that the universe is alive."