漢易的粲然復章－惠棟《易漢學》探要

清代乾嘉時期，考據之風鼎盛，研《易》方針傾向實事求是、袪宋揚漢，其間惠棟尤屬大將，錢大昕曾曰：「漢學之絕者千有五百餘年，至是而粲然復章矣！」直指惠棟對興復漢學居立關鍵。本文即以此為線眼，聚焦於惠棟易學，並突出於其《易漢學》的索探，要點有三：一觀其易著及易學形成的內緣外因；二則以《易漢學》為軸心，探其對孟喜、虞翻、京房、鄭玄、荀爽易學的考索重點，並河圖洛書的申辨：末則綜述此著的疏失與侷限、特色與價值。作為明清以降專力且全面研究漢易的第一人，其學殖之深厚透過《易漢學》儼然可見，雖繁瑣與疏漏難免，然並無礙於其在該時代中的風氣開展與深劇影響。

關鍵字

《易》；惠棟；《易漢學》；漢學

並列摘要

In the Qianlong and Jiaqing Reign of Qing Dynasty, textual criticism was popular.The research direction for the study of Yi inclined to factual evidence, thus Song learning was depreciated and Han learning was promoted. Hui Dong was one of the advocates. Qian Daxin mentioned that, ＂Han learning had been stopped for over 1500 years, but it was revived by the time of Hui Dong.＂ This statement manifests the key position of Hui Dong in the revival of Han learning. Based on this statement, this paper explores Hui Dong's study of Yi, especially on his Yi Han Xue. The focuses of this paper include: 1) to observe the formation of Hui Dong's study of Yi; 2) to discuss his observation and exploration on the study of Yi by Meng Xi, Yu Fan, Jing Fang, Zheng Xuan, and Xun Shuang, while centering on his Yi Han Xue, and his argument on Hetu and Luoshu; 4) to discuss the deficiencies, limitations, features, and values of Yi Han Xue. Hui Dong was the first person who devoted to the study of Yi in Han learning since the Ming and Qing Dynasties. His profoundness in the study is manifested in Yi Han Xue. Although this book contains redundancy and omission, its significant influence on the development of the study of Yi at the time of Hui Dong was self-evident.