"I am no friend of probability theory, I have hated it from the first moment when our dear friend Max Born gave it birth. For it could be seen how easy and simple it made everything, in principle, ever…"

"The only possible way of avoiding paradoxes is to admit that the 'observer' is not something that stands outside the world, but is part of it."

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

"The world is a symphony, and we are the instruments."

"We are told such a number as the square root of 2 worried Pythagoras and his school almost to exhaustion. Being used to such queer numbers from early childhood, we must be careful not to form a low id…"