In the first place, the religious life and the profane life cannot coexist in the same place. If the former is to develop, a special spot must be placed at its disposition, from which the second is excluded. Hence comes the founding of temples and sanctuaries: these are the spots awarded to sacred beings and things and serve them as residences, for they cannot establish themselves in any place except on the condition of entirely appropriating to themselves all within a certain distance. Such arrangements are so indispensable to all religious life that even the most inferior religions cannot do without them. The ertnatulunga, the spot where the churinga are deposited, is a veritable sanctuary. So the uninitiated are not allowed to approach it. It is even forbidden to carry on any profane occupation whatsoever there. As we shall presently see, there are other holy places where important ceremonies are celebrated.[1046] Likewise, the religious life and the profane life cannot coexist in the same unit of time. It is necessary to assign determined days or periods to the first, from which all profane occupations are excluded. Thus feast days are born. There is no religion, and, consequently, no society which has not known and practised this division of time into two distinct parts, alternating with one another according to a law varying with the peoples and the civilizations; as we have already pointed out, it was probably the necessity of this alternation which led men to introduce into the continuity and homogeneity of duration, certain distinctions and differentiations which it does not naturally have.[1047] Of course, it is almost impossible that the religious life should ever succeed in concentrating itself hermetically in the places and times which are thus attributed to it; it is inevitable that a little of it should filter out. There are always some sacred things outside the sanctuaries; there are some rites that can be celebrated on work-days. But these are sacred things of the second rank and rites of a lesser importance. Concentration remains the dominating characteristic of this organization. Generally this concentration is complete for all that concerns the public cult, which cannot be celebrated except in common. The individual, private cult is the only one which comes very near to the temporal life. Thus the contrast between these two successive phases of human life attains its maximum of intensity in the inferior societies; for it is there that the individual cult is the most rudimentary.[1048] II Up to the present, the negative cult has been presented to us only as a system of abstentions. So it seems to serve only to inhibit activity, and not to stimulate it or to modify it. And yet, as an unexpected reaction to this inhibitive effect, it is found to exercise a positive action of the highest importance over the religious and moral nature of the individual.