Barbara Bush: "Be kind."

Barbara Bush -- wife of one president, mother of another, and mother of another who ran but lost -- has died at the age of 92.   She was beloved by both sides of the political divide, perhaps more than anything, because she always seemed to be the authentic, genuine human being.

She once gave this advice to a friend's teenage kids:

   "Be kind.   The moments I most regret in my life were the moments when I could have been kinder."

Rest in peace, Barbara.