《资治通鉴·唐纪·唐纪二十》
现在的一些当政者贪图侥幸的利益而进取西羌，得到他们的土地不能够种庄稼，得到他们的财富不足以使国家富裕，只是浪费财力人力，无益于陛下圣德，更何况成败还不一定呢！
今执事者乃图侥幸之利以事西羌，得其地不足以稼穑，财不足以富国，徒为糜费，无益圣德，况其成败未可知哉！
Now some of the leaders in power covet the momentary benefits of attacking the Western Qiang. If they gain their land, it is unsuitable for growing crops. If they gain their wealth, it is insufficient to enrich the nation. They are merely wasting wealth and manpower, with no benefit to Your Majesty's benevolent governance, and furthermore, success or failure is still uncertain!