Druidism was the religion of the Celts and the Druids themselves were all-powerful, taking precedence over the Celtic kings. Over and above the evidence of classical texts and of archaeology, the richest source of information about the Druids is the vernacular material from Ireland and Wales. It is the author's unparalleled familiarity with the Gaelic texts, and her ability to see Druidism through Celtic eyes, that marks out this study from earlier books and strips away modern myths about the Druids.