If we exclude those merely degraded and pathological theories which have resulted from too exclusive a study of degenerate minds, we find that the current conception of the psyche-by which of course I do not mean the classic conceptions of Ward or even William James-was anticipated by Plotinus, when he said in the Fourth ennead, that every soul has something of the lower life for the purposes of the body and of the higher for the purposes of the Spirit, and yet constitutes a unity; an unbroken series of ascending values and powers of response, from the levels of merely physical and mainly unconscious life to those of the self-determining and creative consciousness.
"The Life of the Spirit and the Life of To-day"
Evelyn Underhill
He was a contemporary of Columbus, and makes brief mention of his discoveries in the eighth book of the tenth ennead of his universal history.
"The Life and Voyages of Christopher Columbus (Vol. II)"
Washington Irving
7. And again, ennead.
"Democritus Platonissans"
Henry More