For a decade, Richard E. Burke was closer to Ted Kennedy than anyone outside the Kennedy clan itself. He was often the last to see the Senator at night, and the first to see him in the morning. Now he has broken his silence to tell the truth about Ted Kennedy's political and personal lives - about the high living that made the Senator one of America's most visible public figures, and about the excesses and moral corruption that have destroyed him as a credible force in American politics.