From Homer to Aristotle, understanding anger and harnessing its power was at the core of Hellenic civilization. Homer created the framework for philosophical inquiries into anger, one that persisted until it was overturned by Stoicism and Christianity. Plato saw anger as the guardian of justice and Aristotle conceived of it as bound to friendship. Yet both showed that anger can become a guardian of injustice and a defender of our psychological abnormalities. Plato claimed that reason is a tertiary factor in controlling anger and Aristotle argued that non-cognitive powers can issue commands...