Excerpt from "Psychology and Alchemy" by Carl G. Jung

"[This example] shows that the difficult operation of thinking in paradoxes--a feat possible only to the superior intellect--has succeeded. [T]his results in a serious conflict for the conscious mind because it is not always either willing or able to put forth the extraordinary intellectual and moral effort needed to take a paradox seriously. Nothing is so jealous as a truth. [T]here is no light without shadow and no psychic wholeness without imperfection. To round itself out, life calls not for perfection but for completeness; and for this the 'thorn in the flesh' is needed, the suffering of defects without which there is no progress and no ascent." (Emphasis added.)

It is no wonder that the vast majority of Christian thinkers so adamantly refuse the concept of the unconscious mind, as proposed by Freud, and even more so, as later explored by Jung--it answers so well so many of the questions to which they have no answers, and demonstrates so profoundly the psychological dangers of an intellect obsessed only with integrity.