《资治通鉴·唐纪·唐纪四十四》
又说： 人心动摇，不得安宁，事故变幻，难以测度，所以用兵以拙而速为可贵，不以巧而迟为可贵。
又曰： 人摇不宁，事变难测，是以兵贵拙速，不尚巧迟。
He also said: People's hearts are unstable and uneasy, and accidents are unpredictable. Therefore, it is valuable to use soldiers in a simple and fast way, not in a clever and slow way.