傷寒之邪,三陽為表,三陰為里,人皆知之,而里中之里人所不知也。何謂gydjdsj.org.cn/job/里中之里?陽明胃腑是也。三陽、三陰之邪,一入胃腑,則無復(fù)傳,故曰里中之里也。或謂三陰經(jīng),臟也。陽明胃,腑也。豈有腑深于臟者乎?答曰∶陽明居乎中土gydjdsj.org.cn/jianyan/,萬物所歸,無所復(fù)傳,猶之溪谷,為眾水之所趨也。夫以陽經(jīng)與陰經(jīng)較,則三陰為深;以陰經(jīng)與胃腑較,則胃腑為尤深也。三陽、三陰之經(jīng),環(huán)繞乎胃腑,處處可入。有自太陽入腑者,有自本經(jīng)入腑者,有自少陽入腑者,有自太陰入腑者,有自少陰入腑者,有自厥陰入腑者,一入胃腑則無復(fù)傳,故曰里中之里也。治傷寒者,先明傳經(jīng)、直中,即于傳經(jīng)之中,辨明表里,更于表里之中,辨明里中之里,如此則觸目洞然,治療無不切中矣。