The author explores the conditions that foster the development of ressentiment, the role of leaders and followers, and the phases of the phenomenon as it encourages destructive behaviors such as murder and suicide. Often considered an incurable disease with destructive social and political repercussions, it is a core motive for acts of terrorism, revolutions, social upheavals and processes of toxic leadership. The author puts forth a model that helps to describe certain historical processes led by ressentiment, like some revolutions and terrorist acts, and to distinguish them from other movements that are usually treated as similar (e.g., independence revolutions). The book then tackles a seemingly impossible question: Can we find a cure for this powerful and destructive impulse? With care and deliberation, the author demonstrates the power of ethical leadership, recognition and redemption as positive unifying forces during human conflicts.