Power doesn’t ­always corrupt, and you can see it in the case of, for example, Al Smith or Sam Rayburn. There, power cleanses. But what power always does is reveal, because when you’re climbing, you have to conceal from people what it is you’re really willing to do, what it is you want to do. But once you get enough power, once you’re there, where you wanted to be all along, then you can see what the protagonist wanted to do all along, because now he’s doing it.