The question of whether people achieve the best outcomes in life by being fiercely competitive, or fundamentally cooperative, has fueled a fierce debate throughout history and inspired many bestselling books. Some, from Adam Smith's Wealth of Nations to Dawkins' The Selfish Gene, argue that acting out our own self interest is the best and the only way to get ahead in work and life. On the other end of the spectrum, Frans De Waal's The Age of Empathy and Adam Grant's recent bestseller Give and Take have argued that cooperation and altruism are the right tools for personal and professional success. In FRIEND AND FOE, award-winning researchers Adam D.Galinksy and Maurice E. Schweitzer explain why this debate misses the mark.