Heo Mok (Korean: 허목; Hanja: 許穆; 10 January 1596 – 2 June 1682) was a Korean calligrapher, painter, philosopher, poet, and politician during the Joseon dynasty, who came from the Yangcheon Heo clan. He was most commonly known by the art name Misu (Korean: 미수; Hanja: 眉叟; lit. "eyebrowed old man"). Heo was known as the best Korean calligrapher of his time due to his unique style of calligraphy. He became a governor at the age of 81, and was the first person in Korean history to hold such a high-ranking position without taking the civil service exam. Source: Wikipedia (en)