“There are certain tragic dimensions which we all lament,” Mr. Starr said in a panel discussion on the presidency at the National Constitution Center in Philadelphia.

“That having been said, the idea of this redemptive process afterwards, we have certainly seen that powerfully” in Mr. Clinton’s post-presidency, he continued, adding, “President Carter set a very high standard, which President Clinton clearly continues to follow.”

He called Mr. Clinton “the most gifted politician of the baby boomer generation.”

“His genuine empathy for human beings is absolutely clear,” Mr. Starr said. “It is powerful, it is palpable and the folks of Arkansas really understood that about him — that he genuinely cared. The ‘I feel your pain’ is absolutely genuine.”