《三国志·蜀书·刘彭廖李刘魏杨传》
先民曾说，左手握着天下的版图，右手拿刀自刎咽喉，愚人也不会这样做，更何况我还能分得清豆子和麦子呢！
先民有言，左手据天下之图，右手刎咽喉，愚夫不为也。况仆颇别菽麦者哉！
The ancients once said that no fool with map in left hand and a knife in right hand would cut his own throat, and of course I know beans from wheat!