This document summarizes Post-Impressionism and its related artistic movements between the late 19th and early 20th centuries. It discusses key Post-Impressionist artists like Seurat, Gauguin, Van Gogh, Cézanne and Symbolist artists who took Impressionism in new directions through techniques like Pointillism, flattening forms, and using color and symbols to convey emotions and ideas. It also covers contemporaneous movements like Symbolism and Naïve art as well as sculptors like Rodin and the transition to early modernism through Cézanne's ideas.