Unscientific as this may appear in our day of exact learning, Descartes was yet far nearer the Occult truth than is any Hæckel. For the Pineal Gland is, as shown, far more closely connected with Soul and Spirit than with the physiological senses of man. Had the leading Scientists a glimmer of the _real_ processes employed by the Evolutionary Impulse, and the winding _cyclic_ course of this great Law, they would _know_ instead of conjecturing, and would feel certain of the future physical transformations which await the human kind by the knowledge of its past forms. Then would they see the fallacy and the absurdity of their modern “blind‐force” and “mechanical” processes of Nature; and, in consequence of such knowledge, would realize that the said Pineal Gland, for instance, could not but be disabled for _physical_ use at this stage of our Cycle. If the odd “eye” is now atrophied in man, it is a proof that, as in the lower animal, it has once been active; for Nature never creates the smallest, the most insignificant, form without some definite purpose and for some use. It was an active organ, we say, at that stage of evolution when the spiritual element in man reigned supreme over the hardly nascent intellectual and psychic elements. And, as the Cycle ran down towards that point where the physiological senses were developed by, and went _pari passu_ with, the growth and consolidation of physical man—the interminable and complex vicissitudes and tribulations of zoological development—this median “eye” at last atrophied together with the early spiritual and purely psychic characteristics in man. The eye is the mirror and also the window of the Soul, says popular wisdom,(679) and _Vox populi, vox Dei_.