Most writing systems evolved gradually over centuries, so it’s impossible to say with certainty who invented the alphabet. No one knows who created A, B, or C, or the original form of most words still in use today. South Korea’s Hangeul is a notable exception. Created by King Sejong the Great in 1443 and officially published in 1446, it is the only major writing system in the world with a known inventor, and there is a surviving document explaining exactly how and why each letter was designed. What’s even more remarkable is that the shape of each basic consonant reflects the position of the tongue, lips, or throat when making the corresponding sound.
How about Korea? Korean alphabet is designed around the human mouth
Before the advent of Hangeul, Koreans mainly wrote using Chinese characters called “Hanja”. Although Hanzi works for Chinese, it is difficult to adapt to Korean due to the huge differences in grammar and pronunciation. Learning thousands of Chinese characters required years of education, meaning literacy was largely limited to aristocratic males. King Sejong wanted a simpler writing system that ordinary people, including farmers, women, and craftsmen, could learn without extensive formal education.To turn this vision into reality, King Sejong began to develop an entirely new writing system rather than simply modifying Chinese characters. Working with scholars at Yeongjaedang, the Royal Research Institute of the Joseon Court, he created an alphabet based on basic principles, carefully designing each letter to reflect how the human vocal organs produce sounds.What makes Hangul unique is its scientific design. Rather than inventing arbitrary symbols, King Sejong devised five basic consonants to represent the position of the vocal organs in producing each sound. For example, ㄱ is similar to the tongue touching the back of the mouth, making a “g” or “k” sound; ㄴ represents the tongue touching the upper gums, making an “n” sound; ㅁ is similar to closed lips, making an “m” sound; ㅅ represents teeth, making an “s” sound; ㅇ represents an open throat. Create additional consonants by adding strokes to these basic shapes to indicate related sounds.
Writing system based on science and philosophy
Korean’s vowels follow a different but equally thoughtful design. Inspired by traditional Korean and Confucian philosophy, they used three simple symbols to represent heaven, earth, and people. Each vowel is composed of these basic elements combined according to consistent rules. Together, consonants and vowels create what linguists describe as a characteristic writing system, in which the occurrence of each letter provides clues about how it should be pronounced.
The instruction manual that I still have
Unlike almost all other alphabets, Hangeul has its own design guidelines. In 1446, King Sejong published Hunminjeongeum, followed by Hunminjeongeum Gaeli, a companion document that explained the principles behind each letter. The text describes why each consonant has its shape, how vowels are formed, and how the writing system is used. This surviving document provides historians with a rare first-hand account of the alphabet’s creation and makes Hangeul unique among the world’s major writing systems.
Not accepted immediately
Despite its practical advantages, Hangeul initially encountered strong opposition from Korea’s Confucian elite, who believed that Chinese characters represented higher culture and education. For centuries, Chinese characters remained the script of choice for official documents and scholarship, while Hangul was used primarily by women, common people, and writers of popular literature. It was not until the late 19th and early 20th centuries, with educational reforms and the rise of Korean nationalism, that Hangul gradually became the country’s dominant writing system.Today, Hangeul is used in nearly every aspect of daily life in South Korea and North Korea, from newspapers and books to government records and digital communications. Modern Korean uses 24 letters, while King Sejong originally used 28 letters. The alphabet has been widely praised by linguists for its logical design, simplicity and efficiency. South Korea’s current literacy rate exceeds 99%. More than 580 years after its creation, Hangeul remains one of the greatest examples of purposeful language design in history, proving that the alphabet can be constructed scientifically and be used by everyone.
