Hyperrealist artist and teacher whose best-known works included his darkly comic self-portraits. He was also sought out for his public-speaking skills.
He studied architecture and painting at Paris' Ecole des Beaux-Arts.
He was sent to the Hinzert concentration camp during World War II as a result of his protest of the German occupation.
His family lived in the southern region of Luxembourg at the time of his birth.
He served as a representative of Luxembourg at the 1939 New York World's Fair, an event for which American president Franklin D. Roosevelt delivered the opening speech.