King Sejong: Joseon's Greatest Innovator

Sejong (1397-1450) was born as the third son of King Taejong. Originally far from the line of succession, he won Taejong's favor through scholarship and virtue and ascended to the throne at 22 in 1418. In the early years, Taejong ruled as senior king, holding military authority, and Sejong focused on domestic governance. True direct rule began after Taejong's death in 1422. Sejong was so passionate about scholarship that records note his eyesight worsened from reading too many books. He was already one of Joseon's foremost scholars before becoming king.

Sejong's creation of Hangul was not simply a scholarly achievement. Breaking through strong opposition from the privileged class, conducting research in secret, and ultimately proclaiming it was the greatest decision of Sejong's life.

Sejong's achievements were not accomplished alone. There was a talent network centered on the Jiphyeonjeon, genius scientists like Jang Yeong-sil, and collaborators within the court.

Sejong is the most sanctified figure in Korean history. However, looking past the myths to historical records reveals an even more complex and human Sejong.

Sejong's achievements are not simply past history. Hangul is recognized today as one of the world's most original and scientific scripts, registered as a UNESCO Memory of the World in 1997. The rain gauge Sejong invented was the world's first standardized rainfall measurement device, 200 years ahead of Europe. The creation of Hangul was not simply the invention of a script but a democratic revolution that allowed the common people to directly access knowledge.