The Four Pillars of Destiny(Sa-ju) Analysis of the Philosophy and Life of Toegye Yi Hwang

The purpose of this study is to examine Toegye Yi Hwang's academic achievements and personality traits through an analysis of his Four Pillars of Destiny (Sa-ju). Toegye's philosophy played a critical role in laying the foundation of Neo-Confucianism in the Joseon Dynasty, and his scholarly achievements and moral leadership continue to serve as a model for many today. Toegye's Day Master is Ji-earth (己土), and his Geokguk (格局) is classified as Sigsin-gyeok (食神格). The intellectual curiosity inherent in Sigsin-gyeok significantly contributed to his success, while the Daewoon periods of Byeong-fire (丙火) and Gap-wood (甲木) are closely related to his external accomplishments. A Four Pillars of Destiny approach to Toegye provides key insights into his delicate personality and educational philosophy. Therefore, Toegye’s life and academic achievements are closely intertwined not only with his remarkable wisdom and efforts but also with the key turning points shaped by his destiny and the flow of his fortune.