If we’re being honest, most of us have at least some selfish aims – to make money, to win a promotion at work, and so on. But importantly, we pursue these goals while at the same time conforming to basic rules of decency.

Source: http://nymag.com/scienceofus/2015/08/neuroscience-of-being-a-selfish-jerk.html?mid=twitter_scienceofus