《管子·轻重甲》
善治国者，一向是利用轻重之术，掌握充足的钱物贮备，所以，事件发生不至于混乱。
善者乡因其轻重，守其委庐，故事至而不妄。
Those who are good at governing the country have always used the techniques of lightness and weight to control the ample supply of money and goods, so that when an incident occurs, it does not lead to chaos.