On a hot August afternoon in 2008, Ted Kennedy took John Kerry sailing on his 50-ft. schooner, the Mya .It was a perfect day on the water, sunny with the occasional cotton-ball cloud riding the strong winds over the family compound in Hyannis Port, Mass. With the Mya 's blue hull moving at a good clip, Kennedy turned to his old friend with reminiscences of failed campaigns past: Kennedy's bid for the presidency in 1980 and Kerry's in 2004. What concerned Kennedy, who three months earlier had learned he had a malignant brain tumor, was legacy Kerry's legacy.
"John,...