Ursula Burns, CEO of Xerox from 2009 to 2016, rose from humble beginnings to become the first Black woman to lead a Fortune 500 company. In this interview with HBR editor-in-chief Adi Ignatius, she talks candidly about the frequent challenges and occasional advantages of being "the only" and explains why organizations needs to do a better job of promoting both economic and racial equality -- themes that also animate her new memoir, "Where You Are is Not Who You Are".