《资治通鉴·晋纪·晋纪二十二》
主上认为长江以南必须靠武力征服，而黄河以西可以靠道义安抚，所以派我们来先申明大义。
主上以为江南必须兵服，河右可以义怀，故遣行人先申大好。
The emperor believes that the land south of the Yangtze River must be conquered by force, while the land west of the Yellow River can be pacified by virtue. Therefore, he sent us here to first state our great principles.