It cannot be said that man at that time had any religion, any conception of a god, or indeed, any definite idea of supernatural beings, but there were many mysteries of nature which he could in no wise comprehend. Incapable of speculative thought, or, indeed, of much continuous thought of any kind, he was unable to distinguish clearly between the animate and inanimate; he attributed active life to all surrounding objects and believed even the trees and plants to put on foliage, blossom and produce fruit because they desired to do so. When a rock, loosened by the action of frost and storm, became detached from a cliff and rolled into the valley below, it did so of its own accord and was regarded with fear. A man would make a wide circuit to avoid it in passing and none would voluntarily approach it. They lived in a region of cliffs and mountains and when one gave a shout, under proper conditions, his words were repeated, sometimes more than once; and none could find the mysterious beings who did the mocking; indeed, after vain searches, they became convinced that the tantalizing mockings came from beings invisible to man, consequently his superiors and, therefore, dangerous. They began to avoid the glens and valleys wherein echoes abounded, or, if compelled to pass through them, did so in silence that their dangerous neighbors might not be provoked to do them an injury. The curling mist rolling silently down the mountain side, was to them another mysterious being of whom they stood in awe, and thunder, lightning and storm each became to them personified and living supernatural beings who terrified them. They had yet no belief that man had a soul or spirit which existed after his death. This thought was to come ages thereafter.