This document provides biographical information about William Butler Yeats and summarizes his famous poem "The Lake Isle of Innisfree". It states that Yeats was an Irish poet and playwright who served as a Senator in Ireland. He co-founded the Abbey Theatre in Dublin and won the Nobel Prize for Literature in 1923. The poem expresses the poet's wish to escape from civilization to the peaceful setting of Innisfree, where he dreams of building a small cabin with a bean garden and beehive to live alone in nature.