Ben Horowitz, a leading venture capitalist, modern management expert, and New York Times bestselling author, combines lessons both from history and modern organisational practice with practical and often surprising advice to help executives build cultures that can weather both good and bad times. In What You Do Is Who You Are, Ben Horowitz, bestselling author of The Hard Thing About Hard Things, turns his attention to a question crucial to every organisation: how do you create and sustain the culture you want? What You Do Is Who You Are explains how to make your culture purposeful by spotlighting four models of leadership and culture-building - the leader of the only successful slave revolt, Haiti's Toussaint Louverture; the Samurai, who ruled Japan for seven hundred years and shaped modern Japanese culture; Genghis Khan, who built the world's largest empire; and Shaka Senghor, an American ex-con who created the most formidable prison gang in the yard and ultimately transformed prison culture. What You Do Is Who You Are is a journey through culture, from ancient to modern. Along the way, it answers a question fundamental to any organisation: who are we?