Yeats took a particular interest in the tales' mythic and magical roots. The Celtic Twilight ventures into the eerie and puckish world of fairies, ghosts, and spirits. "This handful of dreams," as the author referred to it, first appeared in 1893, and its title refers to the pre-dawn hours, when the Druids performed their rituals. It consists of stories recounted to the poet by his friends, neighbors, and acquaintances. Yeats' faithful transcription of their narratives includes his own visionary experiences, appended to the storytellers' words as a form of commentary.

    The six essays and one address included in this volume, selected from Essays, First Series (1841) and Essays, Second Series (1844), offer a representative sampling of his views outlining that moral idealism as well as a hint of the later skepticism that colored his thought. In addition to the celebrated title essay, the others included here are "History," "Friendship," "The Over-Soul," "The Poet," and "Experience," plus the well-known and frequently read Harvard Divinity School Address.