A Positive Balance

A Positive Balance

WASHINGTON -- At the Democrats' 1960 convention in Los Angeles that nominated John Kennedy, his 28-year-old brother Ted was standing with the Wyoming delegation when it sealed the victory. He was then a sibling for minor missions. He would become the most consequential brother.

His two political brothers were young men in a hurry: John became the youngest elected president at 43; Robert died at 42, seeking the presidency as soon as possible after the murder of his brother. Ted came to embody the patience of politics. Charisma is less potent than the smitten imagine; endurance is not sufficient,...