《资治通鉴·宋纪·宋纪十》
于是，按照这种想法，他命令自己的侄子顾原撰写了《定命论》，用以解释、阐明自己的这一观点。
乃以其意命弟子原著《定命论》以释之。
Therefore, in accordance with this idea, he ordered his nephew, Gu Yuan, to write the "Doctrine of Destiny" in order to explain and clarify this point of view.