The Religion of the Ancient Celts Author:J. A. MacCulloch The scientific study of ancient Celtic religion is a thing of recent growth. As a result of the paucity of materials for such a study earlier writers indulged in the wildest speculative flights and connected the religion with the distant East or saw in it the remains of a monotheistic faith or a series of esoteric doctrines veiled under polyth... more »eistic cults.« less