This is but a type of variations possible in primitive societies. Despite the social potency of primitive custom, variation may be surmised to occur in the mental as in the physical life at all stages; and what normally happens in savagery and low civilization appears to be a cancelment of the skeptical variation by the total circumstances--the strength of the general lead to supernaturalism, the plausibility of such beliefs to the average intelligence, and the impossibility of setting up skeptical institutions to oppose the others. In civilized ages skeptical movements are repeatedly seen to dwindle for simple lack of institutions; which, however, are spontaneously set up by and serve as sustainers of religious systems. On the simpler level of savagery, skeptical personalities would in the long run fail to affirm themselves as against the institutions of ordinary savage religion--the seasonal feasts, the ceremonies attending birth and death, the use of rituals, images, charms, sorcery, all tending to stimulate and conserve supernatural beliefs in general. Only the abnormally courageous would dare outspokenly to doubt or deny at all; and their daring would put them in special jeopardy. [91] The ancient maxim, Primus in orbe deos fecit timor, is verified by all modern study of primitive life. [92] It is a recent traveller who gives the definition: "Fetishism is the result of the efforts of the savage intelligence seeking after a theory which will account for the apparent hostility of nature to man." [93] And this incalculable force of fear is constantly exploited by the religious bias from the earliest stages of sorcery. [94] The check to intellectual evolution would here be on all fours with some of the checks inferribly at work in early moral evolution, where the types with the higher ideals would seem often to be positively endangered by their peculiarity, and would thus be the less likely to multiply. And what happened as between man and man would further tend to happen at times as between communities. Given the possible case of a tribe so well placed as to be unusually little affected by fear of enemies and the natural forces, the influence of rationalistic chiefs or of respected tribesmen might set up for a time a considerable anti-religious variation, involving at least a minimizing of religious doctrine and practices. Such a case is actually seen among the prosperous peoples of the Upper Congo, some of whom, like the poorer tribes known to Moffat, have no "medicine-men" of their own, and very vague notions of deity. [95] But when such a tribe did chance to come into conflict with others more religious, it would be peculiarly obnoxious to them; and, being in the terms of the case unwarlike, its chance of survival on the old lines would be small.