When somebody you've wronged forgives you, you're spared the dull and self-diminishing throb of a guilty conscience. When you forgive somebody who has wronged you, you're spared the dismal corrosion of bitterness and wounded pride. For both parties, forgiveness means the freedom again to be at peace inside their own skins and to be glad in each others' presence.
This being human is a guest house. Every morning a new arrival. A joy, a depression, a meanness, some momentary awareness comes as an unexpected visitor. Welcome and entertain all! Even if they're a crowd of sorrows, who violently sweep your house empty of its furniture, still, treat each guest honorably. He may be clearing you out for some new delight. The dark thought, the shame, the malice, meet them at the door laughing, and invite them in. Be grateful for whomever comes, because each has been sent as a guide from beyond.