The study of the origins of religion is impeded by the impossibility of obtaining historical evidence on the subject. If we examine the religious beliefs of extant races, the lowest in material culture, the best representatives of palæolithic man, we are still a long way from the beginnings of human speculation and belief. Man must have begun to speculate about the origins of things as soon as he was a reasoning animal. If we look at the isolated and backward tribe of Central Australia, the Arunta, we have the advantage of perhaps the best and most thoroughly scientific study ever made of such a race, the book by Messrs. Spencer and Gillen.[1] Here we watch a people so 'primitive' that they are said to be utterly ignorant of the natural results, in the way of progeny, of the union of the sexes. Yet, on the same authority, this tribe has evolved an elaborate, and, granting the premises, a scientific and adequate theory of the evolution of our species, and the nature of life. An original stock of spirits is constantly reincarnated; spiritual pedigrees are preserved by records in the shape of oval decorated stones, and it seems that a man or woman of to-day may be identified as an incarnation of a soul, whose adventures, in earlier incarnations, can be traced back to the Alcheringa, or mythical heroic age of the people. Their marriage laws are already in advance of those of their neighbours, the Urabunna, and their only magistracy, of a limited and constitutional kind, descends in the male line. Thus the Arunta are socially in advance of the Pictish royal family in Scotland, whose crown descended in the female line, no king being succeeded by his son. Manifestly the religious or non-religious ideas of such a people, unclothed, houseless, ignorant of metals and of agriculture, and without domesticated animals though they are, must be ideas with a long history behind them. The Arunta philosophy is a peculiar philosophy, worked out by thoughtful men, and elaborated so artfully that there seems neither room for a god, nor for the idea of a future life, except the life of successive reincarnations. It is therefore impossible for us to argue that mankind in general began its speculative career with the singular and apparently godless philosophy of the Arunta. Their working science is sympathetic magic; to the Great Spirit, with a trace of belief in whom they are credited, they are not said to pray; and he seems to be either an invention of the seniors, for the purpose of keeping the juniors and women in order, or a being originally of higher character, belief in whom has died out among the adults. To him we return in another essay.