““We prefer to earn more than our colleagues at work not because we are nasty and want to be envied, but because that is a signal that we have earned our keep. If everyone were paid the same, if everyone lived in the same house, our minds would receive no signal that we are expending our energy in a prudent or productive way. The dollars, the baubles, and the bangles we gain from work spark an aboriginal sentiment that excites the vital juices that keep our hearts beating and the oxygen flowing to our brains.””
