Dealing with intellectual history and, in particular, contemporary intellectual history, is indeed a dangerous undertaking. Any attempt to ascertain the origin of ideas and pin them down to a definite source always seems to raise a scholarly challenge and to invite claims that the idea under discussion has already been the subject of consideration and deliberation. Evidently, however, not everything has been said before. And certain ideas can be traced, without too much effort and without generating too much controversy, to their precise intellectual source.