《左传·昭公·昭公二十三年》
从前梁国国君在公宫旁边挖沟而百姓溃散，百姓抛弃他们上边的人，不亡，还等什么？
昔梁伯沟其公宫而民溃。民弃其上，不亡何待？
In the past, the king of Liang dug a moat beside his palace, and the people fled. The people abandoned their superiors. If they did not perish, what else could happen?