《资治通鉴·汉纪·汉纪二十三》
光禄大夫谷永劝皇上说： 臣听说，明白于 天地之性，惟人为贵 的道理，不可受到神怪之说的迷惑；要知道万物之间的情形，不可被异类之说误导。
谷永说上曰： 臣闻明于天地之性，不可惑以神怪；知万物之情，不可罔以非类。
Grand Master of Ceremonies Gu Yong persuaded the emperor: I have heard that the reason why humans are the most dignified is because they understand the nature of Heaven and Earth. Humans shouldn't be deluded by the theory of mysterious gods, and they should understand the states of affairs between all things and not be confused by the theories of witchcraft.