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.
To be fully human, we must recognize the full humanity of all other people. Each of us will be fully human only when we recognize the Aliveness of all Creation, when we learn to speak of God in Everything, and to humbly admit our interdependence and Oneness with the Great Web we call Creation.