Dorsey regularly recommends "The Score Takes Care of Itself" to entrepreneurs around Silicon Valley.
It's a guide to leadership by the late Bill Walsh, one of the greatest coaches in the history of the National Football League. It was published posthumously in 2010.
When Walsh became head coach of the San Francisco 49ers in 1978, they were the laughing stock of the league; over the next 10 years, the 49ers became a dynasty with four Super Bowl titles.
What makes his career even more remarkable is that he had a knack for finding and growing leaders, and his staff included eight future head coaches.
In his book, he explains the importance of creating a culture of high performance through personal encouragement and praise for exceptional work.