““When we donate to a good cause, it “says” to our associates, “Look, I’m willing to spend my resources for the benefit of others. I’m playing a positive-sum, cooperative game with society.” This helps explain why generosity is so important for those who aspire to leadership. No one wants leaders who play zero-sum, competitive games with the rest of society. If their wins are our losses, why should we support them? Instead we want leaders with a prosocial orientation, people who will look out for us because we’re all in it together.””