Post-Impressionism (also spelled Postimpressionism) is the term coined by the British artist and art critic Roger Fry in 1910 to describe the development of French art since Manet. Fry used the term when he organized the 1910 exhibition Manet and the Post-Impressionists. Post-Impressionists extended Impressionism while rejecting its limitations: they continued using vivid colours, thick application of paint, distinctive brush strokes, and real-life subject matter, but they were more inclined to emphasize geometric forms, to distort form for expressive effect, and to use unnatural or arbitrary colour.
The Post-Impressionists were dissatisfied with the triviality of subject matter and the loss of structure in Impressionist paintings, though they did not agree on the way forward. Georges Seurat and his followers concerned themselves with Pointillism, the systematic use of tiny dots of colour. Paul Cézanne set out to restore a sense of order and structure to painting, to "make of Impressionism something solid and durable, like the art of the museums". He achieved this by reducing objects to their basic shapes while retaining the bright fresh colours of Impressionism. The Impressionist Camille Pissarro experimented with Neo-Impressionist ideas between the mid-1880s and the early 1890s. Discontented with what he referred to as romantic Impressionism, he investigated Pointillism which he called scientific Impressionism before returning to a purer Impressionism in the last decade of his life. Vincent van Gogh used colour and vibrant swirling brush strokes to convey his feelings and his state of mind. Although they often exhibited together, Post-Impressionist artists were not in agreement concerning a cohesive movement. Younger painters during the 1890s and early 20th century worked in geographically disparate regions and in various stylistic categories, such as Fauvism and Cubism.
The term was coined in 1910 by Roger Fry in the title of an exhibition of modern French painters: Manet and the Post-Impressionists, organized by Fry for the Grafton Galleries in London. Most of the artists in the exhibition were younger than the Impressionists. Fry later explained: "For purposes of convenience, it was necessary to give these artists a name, and I chose, as being the vaguest and most non-committal, the name of Post-Impressionism. This merely stated their position in time relatively to the Impressionist movement." John Rewald, one of the first professional art historians to focus on the birth of early modern art, limited the scope to the years between 1886 and 1892 in his pioneering publication on Post-Impressionism: From Van Gogh to Gauguin (1956): Rewald considered it to continue his History of Impressionism (1946), and pointed out that a "subsequent volume dedicated to the second half of the post-impressionist period" Post-Impressionism: From Gauguin to Matisse was to follow, extending the period covered to other artistic movements derived from Impressionism and confined to the late 19th and early 20th centuries. Rewald focused on outstanding early Post-Impressionists active in France: on Van Gogh, Gauguin, Seurat, Redon, and their relations as well as the artistic circles they frequented (or they were in opposition to):
Furthermore, in his introduction to Post-Impressionism, Rewald opted for a second volume featuring Toulouse-Lautrec, Henri Rousseau "le Douanier", Les Nabis and Cézanne as well as the Fauves, the young Picasso and Gauguin's last trip to the South-Sea; it was to expand the period covered at least into the first decade of the 20th century—yet this second volume remained unfinished.
Rewald wrote that "the term 'Post-Impressionism' is not a very precise one, though a very convenient one." Convenient, when the term is by definition limited to French visual arts derived from Impressionism since 1886. Rewald's approach to historical data was narrative rather than analytic, and beyond this point he believed it would be sufficient to "let the sources speak for themselves."