This book is a quick reference guide about the people who, for better or worse, have shaped the world we live in. Step aboard for a voyage through centuries and across continents to explore the lives of history's most famous, infamous, and unforgettable figures. From visionaries who changed the world for the better to ruthless tyrants, and legends whose stories continue to amuse, inspire, and spark debate. Inside, you'll meet rulers and rebels, inventors and artists, heroes and martyrs, saints and sinners. Some built empires, while others ignited revolutions. All were ambitious, whether for power, knowledge, faith, or insatiable curiosity.