Here's what I know about regret. It's always present, even if
unseen, like the moon in the day sky. The tigers of regret are patient.
They can stay hidden for a long time, then pounce. Time doesn't soften
all regrets. Some live even beyond the grave, inherited by the next
generation. To regret is human; to be human is to regret.
-- Jenijoy LaBelle, a professor of literature at CalTech, in LA Times