It is the facts that matter, not the proofs. Physics can progress without the proofs, but we can't go on without the facts ... if the facts are right, then the proofs are a matter of playing around with the algebra correctly.

Know how to solve every problem that has been solved.

If you don't like it, go somewhere else, to another universe where the rules are simpler.

That is the logical tight-rope on which we have to walk if we wish to interpret nature.

If an apple was magnified to the size of the Earth, then the atoms in the apple would be approximately the size of the original apple.

I don't feel frightened by not knowing things.

It turns out that all life is interconnected with all other life.