Quote by John Wheeler
"The crucial question is: how do we know what we know?"
More from John Wheeler
"Quantum mechanics makes absolutely no sense."
"It is often stated that of all the theories proposed in this century, the silliest is quantum theory. In fact, some say that quantum theory is so counter-intuitive that if you haven't been profoundly shocked by it, you haven't understood it."
"Time is what prevents everything from happening at once."
"The universe is a self-synthesizing machine."