《国语·楚语·左史倚相儆申公子亹》
史官不停止书写，乐师不停止诵读，用来训导进献，于是作了《懿》这首戒诗来自我警戒。
史不失书，蒙不失诵，以训御之，于是乎作《懿》戒以自儆也。
The historians never stop writing, and the musicians never stop their recitations, which are used to admonish and make offerings, so I wrote “Yi”, this poem of caution, to admonish myself.