鄭齊斗為韓國朝鮮朝最重要的陽明學者，在當時以朱學為正統官學的環境中，捍衛學術思想的獨立，不受朱學氛圍的影響，始終堅持站在陽明學的角度，替其發聲。除此之外，鄭齊斗其實也是相當注重經世致用的，並非單 純的哲學家而已，他的經世思想，即源於其之陽明學立場。本文的研究，即是探究鄭齊斗如何以「心即理」來建構他的經世之學，主要分為四節，第一 節的文獻回顧，指出鄭齊斗經世之學的重要性，第二節則是從「心即理」的角度，解析鄭齊斗如何繼承陽明學，也是他經世之學的出發點；第三節則重 在以理禮雙彰的方式，從「心即理」到「理即禮」，描繪鄭齊斗經世之學的內涵；第四節則是對全文作出總結。藉由這些論證，冀能增進學界對於鄭齊斗 的瞭解。

Chong Che-du 鄭齊斗is the most important of Korea’s Yangmingist 陽 明學 thinkers. He espoused the school’s ideas and fought for its integrity at a time when Zhu Xi’s 朱熹 doctrines were regarded as orthodox and dominated the intellectual climate. Though primarily a philosopher, Chong is also concerned with statecraft, a preoccupation whose roots also lie in Yangmingism. In four parts, this essay explores how Chong’s concept of “mind as principle 心即理” forms the foundation of his philosophy of statecraft, shedding new light on this figure. Part one provides a literature review of the significance of Chong’s philosophy of statecraft; part two analyzes Chong’s Yangmingist inheritance, which is also the starting point of his own philosophy of statecraft; part three shows the correspondence between principle 理 and rite 禮, describing two components from which Chong constructs his philosophy of statecraft: “mind as principle” and “principle as rite”; part four draws some conclusions.