Introduction: Three simple truths about revenge and forgiveness
Putting vengeance and forgiveness back into human nature
Revenge is a problem : counting the costs
Revenge is a solution : three evolutionary hypotheses
The retribution solution : the evidence for adaptation
Family, friendship, and the functions of forgiveness
The forgiveness instinct
The forgiving brain
To promote and to maintain friendly relations : making forgiveness happen
From neurons to nations
Divine forgiveness and righteous revenge
Homo ignoscens.
Beyond revenge : the evolution of the forgiveness instinct by Michael E. McCullough. ISBN 9780787977566. Published by Jossey-Bass in 2008. Publication and catalogue information, links to buy online and reader comments.