QUOTE : Like other primates, humans can be described either as highly cooperative animals that need to work hard to keep selfish and aggressive urges under control or as highly competitive animals that nevertheless have the ability to get along and engage in give-and-take. This is what makes socially positive tendencies so interesting: They play out against a backdrop of competition. I rate humans among the most aggressive of primates but also believe that we’re masters at connecting and that social ties constrain competition. In other words, we are by no means obligatorily aggressive. It’s all a matter of balance: Pure, unconditional trust and cooperation are naïve and detrimental, whereas unconstrained greed can only lead to the sort of dog-eat-dog world that Skilling advocated at Enron until it collapsed under its own mean-spirited weight.