Alfred Manessier (1911–1993) was a French painter and one of the most important representatives of abstract art in the 20th century. He is known for his colorful and lyrical abstract compositions, often inspired by religious themes, light, and nature. In the 1930s, Manessier developed his own style, influenced by early modernists but also by his deep spiritual convictions. After a retreat in a Trappist monastery in the 1940s, the religious dimension of his work grew stronger. His works are abstract but with a strong focus on color, light, and harmony. He was influenced by stained glass art and also created stained glass windows for churches, including those in the Chapelle du Saint-Sacrement in Brittany and in Metz.