Hangul supremacy
Hangul supremacy is the belief, most widespread in Korea, that the Hangul alphabet developed by King Sejong the Great's Hall of Worthies in 1443 is the simplest, most logical, most beautiful and most scientific of the world's writing systems. In its extreme form, the belief holds that Hangul is in fact best suited for the expression of sounds in all languages.
Choe Manri
Choe Manri (?-1445, sometimes spelled Choi Malli) was an associate professor in the Hall of Worthies (집현전 부제학, 集賢殿副提學) who spoke against the creation of "hangul" (then called "eonmun") together with other Confucian scholars in 1444. He made the following submission that year to King Sejong against "hangul":