《旧唐书·列传·卷二十一》
如果已经成就的事业不败落，继承原有的传统，取消不急迫的事物，减少再减少。
若成功不毁，即仍其旧，除其不急，损之又损。
If the already accomplished cause does not decline, inherit the original tradition, cancel the urgent things, reduce and reduce again.