Theo van Rysselberghe was a Belgian painter born on November 23, 1862, in Ghent. He is best known for his association with the Pointillism technique, which involves applying small dots of color to create vibrant images. Van Rysselberghe was influenced by the Impressionist movement and often depicted landscapes, portraits, and scenes of everyday life. Throughout his career, van Rysselberghe became a prominent figure in the Symbolist movement and was a member of the Les XX group, which aimed to promote modern art in Belgium. He passed away on December 14, 1926, leaving behind a significant legacy in the world of art.