本文有鑑於司馬談〈論六家要旨〉斷言先秦各學派百慮而殊途，同歸於「務為治」，分別以天人關係為論述架構，分別究明《易傳》與《老子》之類同處與差異處。最後證成《易傳》的核心概念之一「正」道，與《老子》的「常」道，雖同源而分流，終可將這兩種理論特色合流於天下的長治久安。

Based on Sima Tan’s On the Fundamentals of Six Philosophical Schools, which concludes that the distinct and different pre-Qin philosophical schools are all oriented toward the pursuits of governance, this article is meant to clarify the similarities and differences between Yi Zhuan and Laozi with regards to the relationship between heaven and man. Then it’s finally proved that the concepts of the “right” way from Yi Zhuan and the “constant way” from Laozi, as ramifications of the same idea, can be united and applied to fulfillment of lasting stability and durable peace.