《资治通鉴·魏纪·魏纪七》
蒋济说： 桓范是很有智谋的，但曹爽就象劣马贪恋马房的草料一样，因顾恋他的家室而不能作长远打算，所以必然不能采纳桓范的计谋。 
济曰： 范则智矣，然驽马恋栈豆，爽必不能用也。 
Jiang Ji said:  Huan Fan is very clever, but Cao Shuang is like an inferior horse eating the grass by the stable, caring only for his family but not for long-term planning, thus he cannot possibly accept Huan Fan's strategy. 