The memory of past wrong-doing whether to others or to self may make a person shrink with shame. Such feeling is valuable only if it creates a counter feeling. It should originate a positive attitude: the remembrance or belief or recall of Plato's archetypal ideal of The Good. This should be followed by new determinations. Not out of someone else's bidding but out of his own inner being he may lay this duty upon himself.
-- Notebooks Category 6: Emotions and Ethics > Chapter 1: Uplift Character > # 496