许学夷诗体正变论之再评价

许学夷诗歌辩体理论的核心问题是诗体“正变”论。讲“诗体正变”与论“体代兴”并不矛盾；以规范与变异来描述诗体的流变，并非意味着变体就毫无价值；以变论变并不等于学诗应首先以学变体为入门基础，强调学诗“复归于正”亦并非不要变化，而是要求变化是在继承最优秀的诗学传统的前提下进行的。目前明代学研究领域一些研究尚未将这些概念区分清楚，因而导致对许学夷诗歌发展史现的评价出现偏差。

Reevaluation on the Norm and Deviation of Xu Xueyi'' s Prosody

The core point of the Xu Xueyi's Prosody is its normand deviation Theory. The theory uses norm and deviation to describe the change of the prosody, which yet doesn't mean that deviant style is useless. Discussing the change by means of change doesn't say that when learning poetry, we have to take the studying of deviant style as the entry task.Nevertheless, but the necessity of change has to be proceeded under the precondition of inheriting the best prosody tradition. Even now, some researchers working in the field of Ming Dynasty Literature have not clarified these concepts, which results in the deviations of the evaluations on the Phylogeny of Xu Xueyi's poetry.