劉向編纂的《說苑．反質》篇所保存的一條〈鳲鳩〉詩傳，一方面維繫了與《詩經》解釋傳統的密切關聯，另一方面也發揮了獨特的思考路徑與問題意識。「一」與「天心」兩者之間的張力是理解該詩傳之整體語境的核心。「一」的概念可以從〈鳲鳩〉一詩原本的解釋學傳統中找到線索；「天心」則指向一種特殊的敘述方式，以及以統攝的視野對整體語境的呈現，它因此也在詩傳中與「一」形成了共軛互釋的關係。詩傳對「天心」的論述是圍繞「一」的多重含義而從多重層次展開的，這意味著「天心」概念在詩傳中疊置了多條彼此貫通的思想脈絡與論證形式。

The commentary of “Shijiu”, which is preserved in Liu Xiang’s Shuo Yuan, maintains a close connection with the hermeneutic tradition of The Book of Songs on the one hand, and on the other hand, it also presents a unique path of problematic awareness. The tension between One and Tianxin (Heavenly Heart) is central to understanding the context of the commentary: the concept of One can be traced to the original hermeneutical tradition of the poem “Shijiu”, while Tianxin points to a particular way of narrating and presenting the overall context with a unified vision, and it thus forms a relationship with One in terms of their mutual interpretation in the whole commentary. This means that the concept of Tianxin is superimposed on many different threads of thought.