This posthumous biography shares an insightful profile about longtime professional coach Bill Campbell, written by three Google executives that worked closely with him. Collectively, they provide a refreshing perspective on the inner workings of some of the most successful startups in history, uniquely guided by a man that thousands of people considered to be their best friend. I found it particularly interesting to learn about the way he engaged everyone he met with the same candor, from his lifelong football teammates to Steve Jobs, and everyone in between.