The Sun Also Rises is a 1926 novel by American writer Ernest Hemingway. The novel is a roman à clef: the characters are based on real people in Hemingway's circle, and the action is based on real events, particularly Hemingway's life in Paris in the 1920s and a trip to Spain in 1925 for the Pamplona festival and fishing in the Pyrenees. Hemingway presents his notion that the "Lost Generation"-considered to have been decadent, dissolute, and irretrievably damaged by World War I-was in fact resilient and strong. Hemingway investigates the themes of love and death, the revivifying power of nature, and the concept of masculinity.