In this 1920 collection of early critical essays, Eliot proposes rules for how a poet should relate to a poem and to the poetic tradition. Arguing against the Romantic tradition of self-expression, Eliot proposes instead that poetry should express universal values and emotions. His twin concepts of "impersonality" and "tradition" have had a lasting impact, and together with the works that Eliot wrote after setting out his principles, they have inspired many major poets of the twentieth century. Some have wanted to imitate him, while many others looked to disagree with him. But few since can be said to have fully escaped Eliot's influence.