So it is in the midst of these effervescent social environments and out of this effervescence itself that the religious idea seems to be born. The theory that this is really its origin is confirmed by the fact that in Australia the really religious activity is almost entirely confined to the moments when these assemblies are held. To be sure, there is no people among whom the great solemnities of the cult are not more or less periodic; but in the more advanced societies, there is not, so to speak, a day when some prayer or offering is not addressed to the gods and some ritual act is not performed. But in Australia, on the contrary, apart from the celebrations of the clan and tribe, the time is nearly all filled with lay and profane occupations. Of course there are prohibitions that should be and are preserved even during these periods of temporal activity; it is never permissible to kill or eat freely of the totemic animal, at least in those parts where the interdiction has retained its original vigour; but almost no positive rites are then celebrated, and there are no ceremonies of any importance. These take place only in the midst of assembled groups. The religious life of the Australian passes through successive phases of complete lull and of super-excitation, and social life oscillates in the same rhythm. This puts clearly into evidence the bond uniting them to one another, but among the peoples called civilized, the relative continuity of the two blurs their relations. It might even be asked whether the violence of this contrast was not necessary to disengage the feeling of sacredness in its first form. By concentrating itself almost entirely in certain determined moments, the collective life has been able to attain its greatest intensity and efficacy, and consequently to give men a more active sentiment of the double existence they lead and of the double nature in which they participate. But this explanation is still incomplete. We have shown how the clan, by the manner in which it acts upon its members, awakens within them the idea of external forces which dominate them and exalt them; but we must still demand how it happens that these forces are thought of under the form of totems, that is to say, in the shape of an animal or plant.