This three-book treatise examines the nature, causes, and remedies of anger. Written around 41 CE and dedicated to Seneca's brother Novatus, it is one of the most systematic ancient treatments of a single emotion.
Seneca argues that anger is never useful, always dangerous, and entirely within our power to prevent. He offers practical strategies for managing it — advice that remains remarkably relevant.
"The best corrective of anger lies in delay."
— Of Anger, 2.29