The study of mind is the study of adaptive behavior.
Leadership is about making tough decisions and standing by them, even when they are unpopular.
鸟快要死的时候,叫声是悲切的,人快要死的时候,说话是善良的。
解析:菩提比喻智慧,明镜比喻清净心。本来清净,又哪里会染上什么尘埃?