Scientists are like pickpockets. God has all the secrets in his pockets, and we try to pick them. You make an assumption in science -- and it is an assumption -- that there are fundamental laws you can find out. You have an idea you think can be proved, and you try to prove it. Depending on how it goes, you make a step forward or you make a fool of yourself. Nature doesn't care whether you're right or wrong. Nature is the way it is, and you had better be smart enough to get a glimpse.