The psychology of the foundations of the spiritual life; the mysterious motives which draw men towards, or alienate them from, religious leaders; the secret of the influence exercised by these latter upon mankind in the mass—all these things are now and always of intense interest. Through the examination of every kind of disease, the science of medicine discovers the laws of health; and through studying many religions and their followers we may likewise arrive at a synthesis of a sane and wholesome faith. The ever-increasing numbers of strange and attractive places of worship which are springing up in all countries bear witness to man's invincible need to find shelter behind immediate certainties, even as their elaborate outer forms reflect the variety of his inward aspirations.
In the great forest of ecstasies and illusions which supplies spiritual nourishment to so many of our fellow-humans, we have here confined ourselves to the examination of the most picturesque and unusual plants, and have gathered them for preference in the soil of Russia and of the United States. These two countries, though in many respects further apart than the Antipodes, furnish us with characteristic examples of the thirst for renewal of faith which rages equally in the simple soul of an uncultured peasant and in that of a business man weary of the artificialities of modern life.
Many of us held mistakenly that our contemporaries were incapable of being fired to enthusiasm by new religions, whose exponents seemed to us as questionable as their doctrines. But we need only observe the facts to behold with what inconceivable ease an age considered prosaic and incredulous has adopted spiritual principles which frequently show up the lack of harmony between our manner of life and our hidden longings.
The religious phenomena which we see around us in so many complex forms seem to foreshadow a spiritual future whose content is illimitable.
Such examples of human psychology, whether normal or morbid, as are here offered to the reader, may well recall to mind some of the strangest products of man's imagination. The tales of Hoffmann or of Edgar Allan Poe pale before these inner histories of the human soul, and the most moving novels and romances appear weak and artificial when compared to the eruptions of light and darkness which burst forth from the depths of man's subconsciousness.
These phenomena will interest the reader of reflective temperament no less than the lover of the sensational and the improbable in real life.