The purpose of the book is to summarise recent advances in our understanding of leader-follower interactions and to illustrate these principles with the lives of ancient political and military leaders from Greece and Rome. The authors review psychologic, cognitive neuroscientific and evolutionary approaches to leader-follower dynamics and illustrate these dynamics as they played out in the lives of the most eminent of the military and political leaders of the classical world. The authors summarise what is known about leader-follower relations by reviewing all extant papers on the topic in the psychology, neuroscientific and evolutionary psychology literature. The raw material for the book came from Plutarch's compendium of 46 biographies of Greek and Roman leaders.