Any man who has a retentive memory, and one capable of minute analysis, can look back in his life and recall moments when his insane personality got the better of his will, and ran riot in forbidden pathways. He may not have committed an insane act; yet the thought, the impulse, the delusion was there and only outside influences kept it from breaking forth. Who fails to remember certain times in his life when he has had an almost overpowering desire to cry out in church, or to laugh on some sad or solemn occasion; or, having a razor in his hand, has had an impulse, sudden and intense, to draw it across his throat; or, being on some high place, has been seized with the desire to hurl himself downward? This shows how near indeed the healthy mind ever hovers on the borderlands of insanity. Man stands so close to the portals of insanity that he can look through the gateway, when he takes an introspective view of his psychical being, and can see the phantoms and mental ghosts of his insane personality. We have every reason to believe that, among civilized races, there is a vast amount of latent insanity. Taking the tables of our insane asylums, we find a thousand and one causes given as the exciting factors in the mental overthrow. Love, religion, anger, disappointment, etc., down through the long list of psychic and æsthetic emotions, until it seems as though even a breath of wind would be sufficient to destroy the mental equipoise. Among savage and uncivilized races, insanity is of infrequent occurrence. Only when a race begins to elevate itself and take on a higher view of morality, when new rules and new laws, new customs and innovations, tending to place individuals in a state of comparison, arise, does insanity make its appearance. The untutored savage, living in a state of communism, is untroubled by the jealousies and heart-burnings of his civilized congener. He lives in the to-day and allows the to-morrow to take care of itself. Devoid of ambition, a mere animal, sensual and indolent, he cares only for the gratification of his physical desires. The mental attributes of a civilized being are, in him, wanting.