Paul Cézanne
Cézanne's work is broadly post-impressionist. His work helped change the 19th-century idea of art to the very different world of art in the 20th century. Cézanne's work is the bridge between late 19th-century Impressionism and the early 20th-century Cubism. The line attributed to both Matisse and Picasso that "Cézanne is the father of us all" is significant.