Literary modernism, or modernist literature, originated in the late 19th and early 20th centuries, and is characterized by a self-conscious break with traditional ways of writing, in both poetry and prose fiction writing. Modernism experimented with literary form and expression, as exemplified by Ezra Pound's maxim to "Make it new." This literary movement was driven by a conscious desire to overturn traditional modes of representation and express the new sensibilities of their time. The horrors of the First World War saw the prevailing assumptions about society reassessed, and much modernist writing engages with the technological advances and societal changes of modernity moving into the 20th century.