The concept of a supermaterial phase of mortal personality was born of the unconscious and purely accidental association of the occurrences of everyday life plus the ghost dream. The simulationeous dreaming about a departed chief by several members of his tribe seemed to constitute convincing evidence that the old chief had really returned in some form. It was all very real to the savage who would awaken from such dreams reeking with sweat, trembling, and screaming.
