What does it mean to be a hero? In The Heroic Heart, Tod Lindberg traces the quality of heroic greatness from its most distant origin in human prehistory to the present day. The designation of “hero” once conjured mainly the prowess of conquerors and kings slaying their enemies on the battlefield. Heroes in the modern world come in many varieties, from teachers and mentors making a lasting impression on others by giving of themselves, to firefighters no less willing than their...