综参古《易》:《太玄》的易学渊源

沿着班固"经莫大于《易》,故作《太玄》"的思路,后人就会寻求《太玄》与《周易》的对应关系,结果却发现二者有诸多不合。以此回溯汉代《易》经存在的实际情况:三《易》并存、《周易》尚未定型,说明《太玄》不仅仅是模仿《周易》,而是综合参照了当时存在的古《易》。本文通过分析《太玄》与《连山》、《河图》、《洛书》的具体关系,揭示《说卦》是《太玄》与古《易》联结的纽带,明晰三《易》发展的实际线索。

Synthetically referring to three ancient types of Yi: on the region of Tai xuan

Affected by BAN Gu's assertion that"of the Classics,there are none greater than the Yi,hence Yang Xiong composed Tai xuan(Great Mystery)by imitating(the architectonics of)the Zhouyi",scholars of later generations tried to find the correlation between Taixuan and Zhouyi in vain.This may prompt us to trace back to the fact of the existence of the Yi in the Han dynasty:the three ancient types of Yi then were coexisting; the Zhouyi had then not obtained a determinate pattern yet,so the author of Tai xuan not only imitated the Zhouyi,but also synthetically referred to other ancient types of Yi existing at that time.By ana- lyzing the concrete relationship between Tai xuan and Lian shan(Successive Mountains),He tu(River Dia- gram),Luo shu(Luo Chart),this paper claims that the Shuo gua(Commentaries on the Eight Trigrams) bears the tie between Tai xuan and the ancient types of Yi to clarify the actual clue threading through the de- velopment of the three ancient types of Yi.