What happiness should we find in reviewing the past , what regrets?

回顾往事，我们将会发现什么快乐、什么悔恨呢？

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That I'll leave no stone unturned, and that I'm able to go to sleep at night with no regrets at what I've done."

VOA: special.2009.12.28

And what he regrets most is the passing of the culture of moral concern they helped to foster.

ECONOMIST: 20th-century history (2): ...then the ethics | The

She deeply, deeply regrets what she's done but what she's asking for is a punishment that's proportionate.

BBC: Lindsay Sandiford accuses UK of condoning death penalty

Miller's attorney says he regrets what he did and the harm it caused.

WSJ: NY trader pleads guilty in $1B Apple stock scheme