David Livingstone was a Scottish Christian Congregationalist, pioneer medical missionary with the London Missionary Society, an explorer in Africa, and one of the most popular British heroes of the late-19th-century in the Victorian era. He had a mythical status that operated on a number of interconnected levels: Protestant missionary martyr, working-class "rags-to-riches" inspirational story, scientific investigator and explorer, imperial reformer, anti-slavery crusader, and advocate of commercial and colonial expansion.
Henri-Robert-Marcel Duchamp was a French-American painter, sculptor, chess player and writer whose work is associated with Cubism, conceptual art, and Dada, although he was careful about his use of the term Dada and was not directly associated with Dada groups. Duchamp is commonly regarded, along with Pablo Picasso and Henri Matisse, as one of the three artists who helped to define the revolutionary developments in the plastic arts in the opening decades of the twentieth century, responsible for significant developments in painting and sculpture. Duchamp has had an immense impact on twentieth-century and twenty first-century art; and he had a seminal influence on the development of conceptual art. By World War I, he had rejected the work of many of his fellow artists as "retinal" art, intended only to please the eye. Instead, Duchamp wanted to use art to serve the mind.
Gertrude Stein was an American novelist, poet, playwright, and art collector. Born in the Allegheny West neighborhood of Pittsburgh, Pennsylvania, and raised in Oakland, California, Stein moved to Paris in 1903, and made France her home for the remainder of her life. She hosted a Paris salon, where the leading figures of modernism in literature and art, such as Pablo Picasso, Ernest Hemingway, F. Scott Fitzgerald, Sinclair Lewis, Ezra Pound, Sherwood Anderson and Henri Matisse, would meet.