alfie kohn

"There is a time to admire the grace and persuasive power of an influential idea, and there is a time to fear it's hold over us. The time to worry is when the idea is so widely shared that we no longer even notice it, when it is so deeply rooted that it feels to us like plain common sense. At this point when objections are not even answered any more because they are no longer even raised, we are not in control: we do not have the idea; it has us."