《资治通鉴·魏纪·魏纪十》
蜀国多次进犯，军队倦怠百姓疲劳，我们去讨伐，易如反掌，但众人都说蜀不可伐。
蜀数为边寇，师老民疲，我今伐之，如指掌耳，而众方蜀不可伐。
Shu has invaded many times, and their troops are exhausted and their people are worn out. If we go on a campaign against them, it will be as easy as blowing dust off of our clothes, but everyone says that Shu cannot be attacked.