《商君书·慎法》
现在想役使百姓，交给他们孝子忠臣都难以做到的事，我以为除非以刑罚来迫使他们，以奖赏来驱使它们不可。
今欲驱其众民，与之孝子忠臣之所难，臣以为非劫以刑而驱以赏莫可。
Now you wish to employ the common people, and commission them to do things that the filial son and the loyal minister have found difficult to do. I think that, unless you use penalties to coerce them, and rewards to stimulate them, it will be impossible.