+635+. The climax of the organization of external religion appears in the conception of gods proper; this conception is always associated with more or less well-developed institutions. Early religious life expresses itself in ceremonies; the god is the embodiment of man's ideal of the extrahuman power that rules the world. It is not always easy to distinguish the true gods from the other supernatural beings with which early man's world is peopled.[1052] As far as concerns power, the ghosts and the spirits appear to do all that the gods are credited with doing; the sphere of ghostly action is practically unlimited, and the spirit that dwells in a spring, in a river, or in a mountain, is as mighty in his sphere as Indra or Apollo in his sphere; the difference between them and gods is a difference of intellectual and moral culture and of the degree of naturalization in a human society--a god might be defined as a superhuman Being fashioned by the thought of a civilized people (the term 'civilized' admitting, however, of many gradations). Still, gods proper may be distinguished from other Powers by certain characteristics of person and function. Ghosts are shadowy doubles of human beings, sometimes nameless, wandering about without definite purpose except to procure food for themselves, uncertain of temper, friendly or unfriendly according to caprice or other circumstances, able to help or to harm, and requiring men to be constantly on the alert so as not in an unguarded moment to offend them. Souls of recently deceased ancestors, more highly organized ghosts, conceived of also as attenuated bodies, have powers not essentially different from those of the simpler ghosts, but are differentiated from these in function by their intimate relations with the family or clan to which they belong, and by their more definite human nature; they are as a rule permanently friendly, are capable of definite sympathetic social intercourse with living men, and are sometimes controllers and patrons, hardly to be distinguished from local or departmental gods. Spirits are ethereal beings residing in, or closely connected with, certain objects (trees, rivers, springs, stones, mountains, etc.), sometimes permanently attached to these objects, sometimes detached; roaming about, sometimes kindly, more generally inimical, authors of disease and death, to be feared and to be guarded against, but sometimes in function (though not in origin) identical with ancestral ghosts. Totems, in their developed form, are revered, but rarely if ever worshiped. The term 'animal-gods' may mean either living animals regarded as divine, or animals believed to be the forms assumed by gods; in the latter case they may be taken to be real gods of an inferior type.