Hartley Burr Alexander, The Mythology of All Races, Vol…
“ It would appear that the First People, the cave-dwellers, were of the nature of spirits or souls, and that the Sun was the true Transformer, whose strength-giving rays gave to each, as it emerged to light, the form which it was to keep. The disembodied soul (opia) haunts the night, moreover, as if night were its native season; in the day it is powerless, and men have no fear of it. Surely it is a beautiful myth which makes of the night-bird's song a longing for the free life of the spirit, or at least an expression of the feeling of kinship with the spirit-world. ”
