Lettrism is an avant-garde movement that emerged in the 1940s, primarily in France. It focuses on the use of letters and symbols as artistic elements, emphasizing the visual and phonetic aspects of language. Founded by Isidore Isou, Lettrism sought to break away from traditional forms of art and literature, exploring new ways to express ideas through the manipulation of text. The movement influenced various art forms, including poetry, visual arts, and film. Lettrist artists often experimented with sound and performance, aiming to create a new language that transcended conventional communication. Its impact can be seen in later movements like Dada and Surrealism.