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King Sejong the Great, the fourth monarch of the Joseon Dynasty, is widely revered as one of Korea’s most iconic and beloved historical figures. His crowning achievement— the creation of Hangul, the Korean alphabet— not only revolutionized literacy but also laid the foundation for cultural independence and social equity in Korea. But what is the true story behind this monumental invention? Was it purely an intellectual pursuit, or was there a deeper political and social agenda behind it? This post dives deep into the origins of Hangul and King Sejong’s vision, separating fact from myth to uncover a nuanced truth.
King Sejong reigned from 1418 to 1450, a time of relative stability in Joseon Korea. The Joseon Dynasty had firmly replaced the Goryeo Dynasty, and Confucianism had taken root as the state ideology. The ruling elite, or yangban class, governed with scholarly rigor, and the central government saw increasing control over military and regional authorities. However, beneath this layer of stability lay a vast population of commoners who remained illiterate, unable to access the classical Chinese script (Hanja) used in governance, law, and culture.
King Sejong’s decision to invent Hangul stemmed from a desire for social reform. Classical Chinese was difficult and inaccessible to commoners, limiting their ability to read laws, express grievances, or participate in intellectual life. While Confucian scholars were proficient in Hanja, the vast majority of the Korean population was effectively voiceless.
Sejong was deeply concerned with the welfare of his people. He believed that for the nation to progress, literacy must become more widespread. His vision was democratic: a system where even "a foolish man could learn to read in ten days." Thus, Hangul was born not only as a linguistic tool but as a social revolution.
The creation of Hangul began in secrecy, led by King Sejong and a group of scholars known as the Hall of Worthies (Jiphyeonjeon). Completed in 1443 and promulgated in 1446 in a document called "Hunminjeongeum" (“The Correct Sounds for the Instruction of the People”), Hangul consisted of 28 characters—14 consonants and 10 vowels in the original form.
What made Hangul revolutionary was its scientific design. The consonants were based on articulatory phonetics—shaped according to how the sounds are made in the mouth. The vowels were based on the principles of yin and yang and the trigrams of I Ching. The system was so rational and efficient that many linguists today regard Hangul as the most logical alphabet in the world.
Despite its brilliance, Hangul faced fierce resistance from the ruling yangban class. Why? Because it threatened their monopoly on knowledge and power. If commoners could read and write, they could also question authority, express dissent, and disrupt the Confucian order that kept the elite in power.
Officially, Confucian scholars ridiculed Hangul as "amugeon" (meaning “women’s script” or “childish letters”). They insisted on the continued use of Hanja, and for many decades, Hangul was relegated to private use among women, lower-class citizens, and Buddhist monks. It wasn’t until centuries later, especially during the 19th and 20th centuries, that Hangul began to receive official recognition and widespread use.
Today, Hangul is the official writing system of both South and North Korea. Its invention is celebrated every year on Hangul Day (October 9th in South Korea, January 15th in North Korea), and it stands as a symbol of Korean identity and pride.
Hangul enabled the flourishing of Korean literature, journalism, and modern communication. During Japanese colonial rule (1910–1945), Hangul became a tool of resistance and nationalism. In the post-war period, it helped democratize education and fostered rapid literacy growth.
King Sejong did not live to see Hangul’s widespread acceptance, but his dream of an informed and literate populace has become a reality. Today, Korea boasts one of the highest literacy rates in the world. More importantly, Hangul reflects the values that King Sejong held dear—compassion, equity, and national sovereignty.
The true story behind King Sejong and the origin of Hangul is one of vision, resilience, and genius. Far from being just a king, Sejong was a philosopher-ruler who sought to uplift the people. Hangul was not merely an alphabet but a tool of empowerment. His creation reflects a rare blend of scientific knowledge, political insight, and deep moral purpose.
As we look back on King Sejong’s legacy, we are reminded that true leadership is not about dominance, but about service. Hangul continues to speak—not only in its written characters, but in the universal language of dignity, intellect, and hope.