凡看傷寒,以傳經(jīng)直中四字為綱領(lǐng)。傳經(jīng)者,由太陽(yáng)傳陽(yáng)明,由陽(yáng)明傳少陽(yáng),由少陽(yáng)傳太陰,由太陰傳少陰,由少陰傳厥陰。此名循經(jīng)傳也。亦有越經(jīng)傳者,如寒邪初客太陽(yáng),有不傳陽(yáng)明而徑傳少陽(yáng)者,有不傳陽(yáng)明經(jīng)而徑入陽(yáng)明腑者。亦有由陽(yáng)明不傳少陽(yáng)而徑入本腑者亦有少陽(yáng)不傳三陰而徑入胃腑者,亦有傳一、二經(jīng)而止者,亦有始終只在一經(jīng)者。雖所傳各各不同,其為傳經(jīng)則一也。若夫直中者,謂不由陽(yáng)經(jīng)傳入而徑中三陰者也。中太陰,則病淺。中少陰,則病深。中厥陰,則愈深矣。此其所當(dāng)急溫也。夫傳經(jīng)之邪,在表為寒,入里即為熱證,不比直中zxtf.net.cn/zhuyuan/之邪,則但寒而無(wú)熱也。先明傳經(jīng)直中,庶寒、熱之劑,不至混投矣。仲景三陰條下,混同立言,而昧者不察,無(wú)zxtf.net.cn怪其意亂心迷也乎?