Born on April 28

Korean admiral of the Joseon dynasty, regarded as one of the greatest naval strategists in history. He successfully defended Korea against the Japanese invasions of the late 16th century without ever losing a battle.

British mathematician and engineer (1854-1923), pioneer of electrical engineering. She conducted groundbreaking research on the electric arc and invented several technical devices, becoming the first woman elected as an associate member of the Royal Society.

Austrian-American mathematician (1906–1978), Kurt Gödel revolutionized mathematical logic with his incompleteness theorems (1931). He proved that no sufficiently powerful formal system can be both complete and consistent.

Yves Klein (1928-1962) was a French visual artist, a major figure of Nouveau Réalisme. A pioneer of the monochrome, he is famous for his patented ultramarine blue (IKB) and his anthropometries created using living models as “paintbrushes.”

Roberto Bolaño (1953-2003) was a Chilean writer and poet, a major figure in late twentieth-century Latin American literature. Exiled after the 1973 coup d'état, he settled in Mexico and then Spain, where he wrote a dense body of novels that earned acclaim posthumously.