David Rubenstein is a self-made billionaire who has achieved success through hard work and dedication. He is the co-founder of the private equity firm The Carlyle Group, and is a philanthropist and political commentator. This book
From Wikipedia
David Mark Rubenstein is an American billionaire businessman, philanthropist, and former government official. He is a co-founder and co-chairman of the Carlyle Group, a private equity firm based in Washington, D.C. Rubenstein is also the principal owner of Major League Baseball (MLB) team the Baltimore Orioles.