By Manripungchwi Jung Yeon-tae
October 9, 2026, marks the 580th anniversary of Hangeul Day, a national holiday celebrating the creation and promulgation of Korea’s unique writing system. This year carries special historical significance. It marks 580 years since King Sejong promulgated Hunminjeongeum, the original name of Hangeul, in 1446. It also marks exactly 100 years since our ancestors established the first celebration of Hangeul Day, originally called Gagyanal, in 1926 during the Japanese colonial period.
Five hundred and eighty years ago, King Sejong gave his people a writing system of their own. A century ago, our ancestors struggled to preserve that writing system while their country was under foreign rule. The letters we read and write so effortlessly today embody both the compassion of a king who cared deeply for his people and the dedication of those who fought to preserve their language and national identity. Yet how deeply do we truly appreciate this extraordinary legacy?
Hangeul is far more than a means of communication. It is a writing system born from compassion for humanity and a remarkable intellectual achievement that continues to demonstrate its value in the digital age and the emerging era of artificial intelligence.
1. King Sejong: A Visionary Leader Who Created an Alphabet for His People
In 1443, King Sejong created the 28 original letters of Hunminjeongeum, which were officially promulgated in 1446. At the time, Korea’s intellectual and administrative systems relied heavily on Chinese characters. For ordinary people who lacked access to formal education, learning these characters was extremely difficult. Many could neither express their thoughts in writing nor easily communicate their grievances to the authorities.
King Sejong was deeply troubled by this reality. His compassion is clearly reflected in the opening words of the Hunminjeongeum preface:
“Because the language of our country differs from that of China, it does not readily correspond to Chinese characters…”
King Sejong explained that he had created a new writing system so that ordinary people could easily learn it and conveniently use it in their daily lives. Behind these simple words lies an extraordinary philosophy of leadership. King Sejong possessed the highest political authority in Joseon. The existing system, in which literacy was concentrated among educated elites, largely benefited the ruling class.
Knowledge was power, and access to written knowledge helped preserve social privilege. Yet Sejong sought to lower those barriers. His guiding principle was that knowledge should not remain the exclusive privilege of a few but should become accessible to all. From a modern perspective, this was a revolutionary vision of broader access to knowledge and education.
King Sejong recognized the difficulties faced by ordinary people, studied their causes, developed an innovative solution, and made that solution available to society. His leadership combined compassion, scientific inquiry, innovation, and a profound commitment to the public good. He did not create Hangeul to glorify his own authority. He created it so that ordinary people, whose names might never appear in history books, could express their thoughts and communicate their feelings.
To me, this is the essence of King Sejong’s greatness.
2. Hangeul: A Remarkable Invention Combining Science and Philosophy
Hangeul occupies a distinctive position in the history of writing systems. Unlike many scripts that evolved gradually over centuries, Hangeul has a historically documented creator, purpose, date of creation, and underlying design principles. Its basic consonant letters—ㄱ, ㄴ, ㅁ, ㅅ, and ㅇ—were designed to reflect the shapes or characteristics of the human speech organs involved in producing sounds. Its original vowel system incorporated the philosophical concept of Cheon-Ji-In (天地人), representing Heaven, Earth, and Humanity.
Thus, the scientific analysis of human speech and the philosophical understanding of nature and human existence were integrated into a single writing system. Another remarkable characteristic of Hangeul is its systematic combination of a relatively small number of letters into a vast range of syllables. Modern Hangeul uses 24 basic letters—14 consonants and 10 vowels. Through systematic combinations of initial consonants, vowels, and optional final consonants, the Unicode standard accommodates 11,172 precomposed modern Korean syllables.
This demonstrates how the structural regularity of Hangeul can be represented systematically in digital technology. Of course, King Sejong could not have anticipated computers or artificial intelligence nearly six centuries into the future. Nevertheless, it is remarkable that a writing system created in the 15th century could be adapted so effectively to modern information technology.
The greatness of Hangeul lies not merely in its relative ease of learning. Its true brilliance lies in the scientific analysis of human speech and the ability to express complex sounds through a concise, systematic set of principles. This intellectual achievement deserves recognition not simply as a source of Korean national pride but as an important contribution to human civilization.
3. How Hangeul Helped Transform Korea’s Destiny
The promulgation of Hangeul did not immediately make literacy universal. For centuries, Chinese characters remained dominant in scholarly and official communication, while Hangeul gradually spread through everyday life. It appeared in personal letters, literary works, songs, and religious texts, enabling a wider range of people, including women with limited access to classical education, to express themselves in writing. Over time, Hangeul became an essential means of preserving and transmitting Korean culture.
Its importance became especially apparent during one of the darkest periods of Korean history. In 1926, while Korea was under Japanese colonial rule, Korean language scholars and cultural activists established Gagyanal, the predecessor of Hangeul Day. For these individuals, preserving the Korean language and writing system meant more than protecting a method of communication. It meant protecting the identity, memory, and cultural continuity of a nation that had lost its sovereignty.
Scholars and educators such as Ju Si-gyeong and Choe Hyeon-bae devoted their lives to studying, preserving, and developing the Korean language. Many language activists endured hardship and repression in their efforts to safeguard Korea’s linguistic heritage. Their dedication helped ensure that Hangeul would survive and flourish.
Following Korea’s liberation in 1945, Hangeul played a significant role in expanding education, literacy, public communication, and cultural development. Korea’s educational achievements and economic development cannot be attributed to Hangeul alone. Educational policies, social investment, industrialization, and the commitment of the Korean people were also essential. Nevertheless, Hangeul’s systematic and accessible structure provided an important foundation for literacy and the dissemination of knowledge.
King Sejong created Hangeul, but generations of Koreans preserved, developed, and passed it down to us. The freedom to read, write, learn, and communicate in our own language is not something we should take for granted. It is a precious inheritance made possible by the wisdom and sacrifices of our ancestors.
4. Hangeul in the Digital and Artificial Intelligence Eras
The emergence of computers and the internet in the late 20th century transformed the nature of written communication. Letters that had once existed primarily on paper became digital information. Hangeul’s systematic principles of combining consonants and vowels proved useful in the development of Korean keyboard input methods and digital character-processing technologies. Today, Koreans can easily type Hangeul on smartphones, search for information online, create digital documents, and communicate instantly with people around the world.
We have now entered another period of profound technological transformation: the age of artificial intelligence. Generative AI systems, including ChatGPT, can process human language, generate text, analyze information, and assist with increasingly complex intellectual tasks. In the past, people had to learn specialized programming languages and commands to interact with computers. Today, computers can increasingly respond to instructions expressed in ordinary human language.
This development creates new opportunities for Hangeul and the Korean language. For AI to understand and use Korean accurately, it requires extensive, reliable, and diverse Korean-language data. Knowledge concerning Korean history, philosophy, science, technology, law, administration, literature, and culture must be systematically preserved and made accessible in digital form. At the same time, AI must learn to handle the distinctive grammatical and semantic features of Korean, including particles, verb endings, honorific expressions, contextual meaning, and the frequent omission of sentence elements.
An important distinction must be made here. Hangeul is a writing system, while Korean is a language. The effectiveness of AI in processing Korean depends not simply on the scientific structure of Hangeul but also on linguistic complexity, data quality, computational methods, and model architecture. Nevertheless, Hangeul’s systematic structure remains a valuable foundation for digital text representation and processing.
I believe that a nation’s linguistic capabilities will become an increasingly important component of its digital sovereignty and knowledge sovereignty. The ability to create, preserve, analyze, and utilize knowledge in one’s own language will become a significant element of national competitiveness.
Nearly six centuries ago, King Sejong was concerned that ordinary people could not fully express themselves because they lacked access to a suitable writing system. Today, we should similarly be concerned about those who cannot fully participate in society because they lack access to digital technologies and artificial intelligence. The compassion that inspired the creation of Hangeul can therefore guide our responsibilities in the AI era. Technology should not remain the privilege of a small, highly educated group.
Its benefits should be accessible to everyone. In this sense, King Sejong’s philosophy remains profoundly relevant.
5. What We Must Pass Down to Future Generations
Today, interest in the Korean language continues to expand around the world. The global popularity of K-pop, Korean dramas, films, literature, cuisine, and other aspects of Korean culture has inspired people from many countries to study Korean. The language that Koreans once struggled to preserve under colonial rule has become one that people around the world voluntarily choose to learn. What an extraordinary historical transformation.
Yet the globalization of Hangeul should mean more than simply increasing the number of people who can read and write Korean. It should also provide opportunities to share the intellectual and cultural values that shaped its creation. King Sejong’s compassion for ordinary people, his respect for human dignity, his commitment to education, and his dedication to scientific inquiry remain relevant to people of every nationality.
At the same time, we must remember that genuine cultural pride does not require us to diminish other languages or cultures. Every language and writing system embodies its own history, identity, and cultural significance. True confidence comes from understanding the value of our heritage while respecting the heritage of others.
There is another responsibility we must recognize. In contemporary Korean society, unnecessarily complicated terminology and the excessive use of foreign expressions can sometimes make communication difficult. Even official documents intended for the public are occasionally filled with language that ordinary citizens struggle to understand. What would King Sejong think if he saw such practices today?
He created Hangeul so that people could communicate more easily. To honor his legacy, we should strive to make public language clear, accurate, and accessible. Loving Hangeul does not mean rejecting foreign words or resisting linguistic change. It means preserving the ability of our language to communicate meaning effectively while adapting to new knowledge and cultural developments.
Above all, we must teach our children and grandchildren more than the letters themselves. They should understand why Hangeul was created, what values inspired its creation, and how previous generations struggled to preserve it. They should learn the importance of compassion for the disadvantaged, equal access to education, scientific curiosity, innovation, and responsible leadership.
The true purpose of historical education is not merely to celebrate past achievements but to apply the wisdom of our ancestors to the challenges of the present. That is the inheritance we should pass on to future generations.
6. King Sejong’s Wisdom: Illuminating the Next Thousand Years
On this Hangeul Day, I find myself reflecting once again on King Sejong. Why do we remember him as one of the greatest leaders in Korean history? It is not because he conquered vast territories or constructed magnificent palaces. His greatness lies in something far more enduring.
He created a writing system that enabled ordinary people to express their thoughts and feelings. That writing system gradually transformed countless lives. It allowed mothers to write letters to their children, loved ones to communicate their affection, and ordinary people to preserve their experiences and memories. It helped open the world of learning to people who might otherwise have remained excluded from written knowledge.
Today, Koreans use Hangeul to conduct scientific research, create literature, communicate globally, and interact with artificial intelligence. Perhaps King Sejong’s greatest legacy was not simply the writing system itself. It was his belief that ordinary people should have the opportunity to become active participants in the world of knowledge.
As I reflect on this history, I am reminded that the educational, cultural, and technological achievements we enjoy today did not emerge by accident. They rest upon the accumulated wisdom, sacrifice, and dedication of countless generations. We owe our ancestors profound gratitude and respect. But gratitude must lead to action.
We must preserve the cultural heritage they entrusted to us, develop new knowledge and technologies, and leave future generations a richer intellectual and spiritual inheritance. As artificial intelligence transforms our world, we should ask ourselves two fundamental questions. For whom should technology exist? Whom should knowledge serve?
Nearly 580 years ago, King Sejong offered an enduring answer.
Technology and knowledge should serve the people.
The greatness of technology lies not only in the complexity of the problems it can solve but also in the number of human lives it can improve. This principle connects King Sejong’s vision with the responsibilities of our own technological age.
On the 580th anniversary of Hangeul’s promulgation, I offer my deepest respect and gratitude to King Sejong. I also bow in appreciation to the countless scholars, educators, patriots, and ordinary citizens who protected and developed our language throughout history. With the writing system they preserved, we continue to record our thoughts, share our love, explore the universe, and imagine tomorrow’s possibilities.
Our responsibility is clear. We must do more than take pride in King Sejong’s extraordinary legacy. We must carry his spirit forward by building a society that future generations will be proud to inherit.
I hope that one day our descendants will look back upon our era and say:
“Our ancestors not only preserved the writing system created by King Sejong but also transformed its wisdom into a new intellectual foundation for the age of artificial intelligence.”
If we can accomplish that, the seed of wisdom planted nearly six centuries ago will continue to flourish, illuminating human civilization for another thousand years. Hangeul is a proud inheritance from our history. King Sejong’s compassion for humanity is an enduring legacy we must carry into the future.
October 9, 2026
Commemorating the 580th Anniversary of Hangeul Day
By Manripungchwi Jung Yeon-tae
About the Author
Jung Yeon-Tae, who writes under the pen name Manri Pungchwi, is a cultural thinker and policy strategist. His research and writing connect history, philosophy, science and technology, interpreting Korea’s traditional culture as a source of future value in an era of civilizational change and artificial intelligence.
