李滉
Yi Hwang (1501–1570) was a Korean philosopher and writer. He was one of the two most prominent Korean Confucian scholars of the Joseon Dynasty, the other being his younger contemporary Yi I (Yulgok). A key figure of the Neo-Confucian literati, he established the Yeongnam School and set up the Dosan Seowon, a private Confucian academy. Yi Hwang is often referred to by his pen name Toegye ("Retreating Creek"). His courtesy name was Gyeongho.