The text begins with essays on the nature and craft of biography and autobiography, arguing that lives reveal inner thoughts as much as events and that life-writing blends fact with interpretation. A second section offers psychological readings of many figures—writers, poets, soldiers, editors, clergy, artists, actors, statesmen, educators, prizefighters and fictional personae—using biographical detail to illuminate temperament, creative impulse, and public character. Brief critical studies combine literary judgment with medical-psychological observation to show how personality influences achievement and public reputation.