This document provides an overview of modernism and postmodernism in literature. It defines modernism as a movement from the late 19th to early 20th century that celebrated new styles and rejected realism. Postmodernism developed in the mid-20th century as a radical movement that questioned modernism and used a mixture of styles. Some key differences discussed are modernism's focus on the interior self versus postmodernism's exterior focus, and modernism's adherence to logic versus postmodernism's rejection of it. Examples of modernist and postmodernist authors and works are also provided.