More from MacDonald on forgiveness.
There are various kinds and degrees of wrongdoing, which need varying kinds and degrees of forgiveness. An outburst of anger in a child, for instance, scarcely wants forgiveness. The wrong in it may be so small, that the parent has only to influence the child for self-restraint, and the rousing of the will against the wrong. The father will not feel that such a fault has built up any wall between him and his child.
But suppose that he discovered in him a habit of sly cruelty towards his younger brothers, or the animals of house, how differently would he feel! Could his forgiveness be the same as in the former case? Would not the different evil require a different form of forgiveness? I mean, would not the forgiveness have to take the form of that kind of punishment fittest for restraining, in the hope of finally rooting out, the wickedness? Could there be true love in any other kind of forgiveness than this? A passingby of the offence might spring from a poor human kindness, but never from divine love. It would not be remission. Forgiveness can never be indifference. Forgiveness is love towards the unlovely.
—George MacDonald, Creation in Christ