The system of the idealists is quite the contrary of this. It is the reversal of all human experiences and of that universal and common good sense which is the essential condition of all human understanding, and which, in rising from the simple and unanimously recognized truth that twice two are four to the sublimest and most complex scientific considerations--admitting, moreover, nothing that has not stood the severest tests of experience or observation of things and facts--becomes the only serious basis of human knowledge. Very far from pursuing the natural order from the lower to the higher, from the inferior to the superior, and from the relatively simple to the more complex; instead of wisely and rationally accompanying the progressive and real movement from the world called inorganic to the world organic, vegetables, animal, and then distinctively human--from chemical matter or chemical being to living matter or living being, and from living being to thinking being--the idealists, obsessed, blinded, and pushed on by the divine phantom which they have inherited from theology, take precisely the opposite course. They go from the higher to the lower, from the superior to the inferior, from the complex to the simple. They begin with God, either as a person or as divine substance or idea, and the first step that they take is a terrible fall from the sublime heights of the eternal ideal into the mire of the material world; from absolute perfection into absolute imperfection; from thought to being, or rather, from supreme being to nothing. When, how, and why the divine being, eternal, infinite, absolutely perfect, probably weary of himself, decided upon this desperate _salto mortale_ is something which no idealist, no theologian, no metaphysician, no poet, has ever been able to understand himself or explain to the profane. All religions, past and present, and all the systems of transcendental philosophy hinge on this unique and iniquitous mystery.[1] Holy men, inspired lawgivers, prophets, messiahs, have searched it for life, and found only torment and death. Like the ancient sphinx, it has devoured them, because they could not explain it. Great philosophers, from Heraclitus and Plato down to Descartes, Spinoza, Leibnitz, Kant, Fichte, Schelling, and Hegel, not to mention the Indian philosophers, have written heaps of volumes and built systems as ingenious as sublime, in which they have said by the way many beautiful and grand things and discovered immortal truths, but they have left this mystery, the principal object of their transcendental investigations, as unfathomable as before. The gigantic efforts of the most wonderful geniuses that the world has known, and who, one after another, for at least thirty centuries, have undertaken anew this labor of Sisyphus, have resulted only in rendering this mystery still more incomprehensible. Is it to be hoped that it will be unveiled to us by the routine speculations of some