It is not always by plugging away at a difficulty and sticking to it that one overcomes it; often it is by working on the one next to it. Some things and some people have to be approached obliquely, at an angle.
“Obama is making a choice now that will lead to the deaths of many thousands of civilians in Afghanistan by American hands. By ordinary standards of presidents, he is a decent man. But those standards aren't good enough. He's in a position either to kill or not to kill, and he's made the decision to ”
“Indeed, this epistemological theory of the relation between theory and experiment differs sharply from the epistemological theory of naive falsificationism.”