All the time you're saying to yourself, 'I could do that, but I won't,'--which is just another way of saying that you can't.
Richard P. FeynmanThere are theoretical physicists who imagine, deduce, and guess at new laws, but do not experiment; and then there are experimental physicists who experiment, imagine, deduce, and guess.
Richard P. FeynmanGod was invented to explain mystery. God is always invented to explain those things that you do not understand.
Richard P. Feynman