Toegye is the pen name of the renowned Korean Confucian scholar Yi Hwang, who lived during the 16th century. He is celebrated for his contributions to Korean philosophy and education, particularly in the interpretation of Confucianism. Toegye emphasized the importance of moral integrity and self-cultivation, influencing many scholars and students in Korea. Toegye's most notable work is the "Ten Diagrams on Sage Learning," which outlines his philosophical ideas and teachings. His thoughts on ethics and governance have had a lasting impact on Korean society, making him a key figure in the development of Korean Confucianism.