Korean Neo-Confucian Masters Series Vol.4: Yulgok Yi I: The Practice of Reverent Sincerity

Yulgok Yi I: The Practice of Reverent Sincerity

Volume 4 of the Korean Neo-Confucian Masters Series

Yulgok Yi I (栗谷 李珥, 1536-1584):

A generation later, Yulgok sought to integrate metaphysical inquiry with the practical demands of governance. His writings articulate a continuity between personal moral cultivation and the institutional structures of education, administration, and national defense. Few thinkers in the Korean tradition matched his breadth of concern, and his proposals for large-scale reform remain among the most ambitious in Confucian statecraft.

This volume examines the thought of Yi I, often characterized as a pragmatic reformer and institutional thinker. While such descriptions offer a useful starting point, they obscure the deeper coherence of his work. A close reading of the Yulgok jeonseo reveals a sustained engagement with fundamental questions: the relation between principle and vital force, the integrity of the mind, and the challenge of giving moral insight durable institutional form.

Modern scholarship has tended to divide Yulgok's writings into discrete domains, separating metaphysical reflection from political proposals. Yet his texts resist such distinctions. Across memorials, letters, and philosophical treatises, a shared conceptual language-reverence, sincerity, righteousness, and mind-moves fluidly between moral psychology and statecraft. This study approaches these materials as an interconnected whole, in which speculative clarity and practical responsibility remain inseparable.

Grounded in close textual analysis, the book traces recurring conceptual patterns as they emerge within Yulgok's corpus and historical context. In doing so, it presents him not as a figure divided between philosophy and politics, but as a thinker concerned with their unity-one who confronts the enduring problem of how inner cultivation and public order can be sustained together.

The Korean Neo-Confucian Masters Series has emerged from a long-standing sense that the intellectual achievements of Korean Confucianism deserve fuller recognition within global scholarship than they have thus far received. While studies of Song-Ming (宋明) Confucianism in China, and of its diverse reinterpretations in Japan, have accumulated over many decades, the Korean tradition-despite its remarkable subtlety and sustained philosophical creativity-has often remained at the margins of broader academic discussions. The present series aims, in a modest but deliberate way, to redress that imbalance. It introduces seven thinkers whose works not only defined the contours of Joseon intellectual life (朝鮮, 1392-1910) but also contributed to the wider development of East Asian philosophy.