李滉
Seong Hon (1535 – 1598) was a Korean philosopher, poet, and politician during the Joseon Dynasty. He was a Neo-Confucianist scholar who was a close friend of the scholar Yi I (Yulgok) and an older contemporary of Yi Hwang (Toegye), leader of the country's "western faction" ("seoin" 서인, 西人) of the period.