William Walker Atkinson,
The Human Aura: Astral Colors and Thought Forms
“ So it is with the human aura. At times it may be seen as a beautiful, calm, luminous atmosphere, presenting the appearance of a great opal under the rays of the sun. Again, it blazes like the flames of a great furnace, shooting forth great tongues of fire in this direction and that, rising and falling in great waves of emotional excitement, or passion, or perhaps whirling like a great fiery maelstrom toward its centre, or swirling in an outward movement away from its centre. ”
