Thus it was that in obedience to the law laid down by his mother, and in obedience to the law of that unknown and nameless thing, fear, he kept away from the mouth of the cave. It remained to him a white wall of light. When his mother was absent, he slept most of the time, while during the intervals that he was awake he kept very quiet, suppressing the whimpering cries that tickled in his throat and strove for noise.

Once, lying awake, he heard a strange sound in the white wall. He did not know that it was a wolverine, standing outside, all a-trembling with its own daring, and cautiously scenting out the contents of the cave. The cub knew only that the sniff was strange, a something unclassified, therefore unknown and terrible⁠—for the unknown was one of the chief elements that went into the making of fear.