There have been a lot of beautiful articles written about Ted Kennedy, but Bob Kuttner goes beyond emotionalism and gets at what is truly historic about the man: Not his ideals or his commitments -- plenty of people have those -- but his remarkable skill as a legislative tactician. Kennedy has been bipartisan in service of progressivism, and in that, proven one of the last legislators in America able to preserve a functioning politics while pushing forward on a progressive agenda.