《管子·侈靡》
因为这样做正是促进了农业生产。县的收入也有主持其事的，收取财物以满足需用，若不以此项满足需用，便放在市场上积累生利。但有时收入则愈积愈少，有时可愈积愈多，这叫作营利无常。
县人有主，人此治用，然而不治，积之市，一人积之下，一人积之上，此谓利无常。
Because this action is exactly what promotes agricultural production. The county's revenues are managed by officials who collect the money needed to meet the county's needs. If this amount is not sufficient, they borrow the money from the market. Sometimes the revenues are too low for repayment, but sometimes the revenues may increase, which means that the profits are inconstant.