DRUIDISM was the faith of the Celtic inhabitants of Gaul until the time of the Romanization of their country, and of the Celtic population of the British Isles either up to the time of the Romanization of Britain, or, in parts remote from Roman in fluence, up to the period of the introduction of Christianity. From the standpoint of the available sources the subject presents two distinct fields for enquiry, the first being pre-Roman and Roman Gaul, and the second pre-Christian and early Christian Ireland and Pictland. In the present state of knowledge it is difficult to assess the interrelation of druidic paganism.
Of druidism itself, little is said except that the druids taught the immortality of the human soul, maintaining that it passed into other bodies after death. This belief was identified by later writers, such as Diodorus Siculus, with the Pythagorean doctrine, but probably incorrectly; for there is no evidence that the druidic belief included the notion of a chain of successive lives as a means of ethical purification, or that it was governed by a doctrine of moral retribution having the liberation of the soul as the ultimate hope, and this seems to reduce the druidic creed to the level of ordinary religious speculation. Of the theology of druidism, Caesar tells us that the Gauls, following the druidic teaching, claimed descent from a god corresponding with Dis in the Latin pantheon, and it is possible that they regarded him as a Supreme Being; he also adds that they worshipped Mercury, Apollo, Mars, Jupiter and Minerva, and had much the same notion about these deities as the rest of the world. In short, Caesar's remarks imply that there was nothing in the druidic creed, apart from the doc trine of immortality, that made their faith extraordinary, so that it may be assumed that druidism professed all the known tenets of ancient Celtic religion and that the gods of the druids were the familiar and multifarious deities of the Celtic pantheon. The philosophy of druidism does not seem to have survived the test of Roman acquaintance, and was doubtless a mixture of astrology and mythical cosmogony. Cicero (De Divin. xli., 9o) says that Divitiacus boasted a knowledge of physiologia, but Pliny decided eventually (N.H. xxx., 13) that the lore of the druids was little else than a bundle of superstitions. Of the religious rites them selves, Pliny (N.H. xvi., 249) has given an impressive account of the ceremony of culling the mistletoe, and Diodorus Siculus (Hist., v., 31, 2-5) describes their divinations by means of the slaughter of a human victim, Caesar having already mentioned the burning alive of men in wicker cages. It is likely that these victims were malefactors, and it is accordingly possible that such sacrifices were rather occasional national purgings than the common practice of the druids.
The advent of the Romans quickly led to the downfall of the druidic order. The rebellion of Vercingetorix must have ended their inter-tribal organization, since some of the tribes held aloof or took the Roman side ; furthermore, at the beginning of the Christian era their cruel practices brought the druids into direct conflict with Rome, and led, finally, to their official suppression. At the end of the 1st century their status had sunk to that of mere magicians, and in the and century there is no reference to them. A poem of Ausonius, however, shows that in the 4th cen tury there were still people in Gaul who boasted of druidic descent.
The Irish druid was a notable person, figuring in the earliest sagas as prophet, teacher and magician ; he did not possess, never theless, the judicial powers ascribed by Caesar to the Gallic druids, nor does he seem to have been a member of a national college with an archdruid at its head. Further, there is no mention in any of the texts of the Irish druids presiding at sacrifices, though they are said to have conducted idolatrous worship and to have celebrated funeral and baptismal rites. They are best de scribed as seers who were, for the most part, sycophants of princes.
The etymology of the word druid is still doubtful, but the old orthodox view taking drat as a strengthening prefix and uid as meaning knowing, whereby the druid was a very learned man, has been abandoned in favour of a derivation from an oak-word. Pliny's derivation from Greek SEVS is, however, improbable.
A great revival of interest in the druids, largely promulgated by the archaeological theories of Aubrey and Stukeley, and by Ro manticism generally, took place in the 18th and 19th centuries. One outcome of this interest was the invention of neo-druidism, an extravagant mixture of helio-arkite theology and Welsh bardic lore, and another result is that more than one society has pro fessed itself as inheriting the traditional knowledge and faith of the early druids. The Ancient Order of Druids, however, a friendly society founded in the i8th century, makes no such claim.
BIBLIOGRAPHY.-G. F. Black, Druids and Druidism: a list of referBibliography.-G. F. Black, Druids and Druidism: a list of refer- ences (New York Public Library, 192o) ; J. A. MacCulloch, The Religion of the Ancient Celts (Edinburgh, 1911), and in Hastings, E.R.E., s.v. Druids; A. MacBain, Celtic Mythology and Religion (Stirling, 1917) ; Camb. Med. Hist., ii., xv., pp. 46o, 472 ; T. D. Kendrick, The Druids (2nd ed. 1928—all classical refs. in original and with trans.) . (T. D. K.)