Paul Graham has an essay on how very few of the most successful people he knows are mean:
Part of what’s going on, of course, is selection bias. I only know people who work in certain fields: startup founders, programmers, professors. I’m willing to believe that successful people in other fields are mean. Maybe successful hedge fund managers are mean; I don’t know enough to say. It seems quite likely that most successful drug lords are mean. But there are at least big chunks of the world that mean people don’t rule, and that territory seems to be growing.
A nice one!