We might expect that it should propound with authority, and definitively settle, those all-important problems which have exercised the mental powers of the ablest men of Asia and Europe for so many centuries, and which are at the foundation of all faith and all philosophy; that it should distinctly tell us in unmistakable language what is God, what is the world, what is the soul, and whether man has any criterion of truth; that it should explain to us how evil can exist in a world the Maker of which is omnipotent and altogether good; that it should reveal to us in what the affairs of men are fixed by Destiny, in what by free-will; that it should teach us whence we came, what is the object of our continuing here, what is to become of us hereafter. And since a written work claiming a divine origin must necessarily accredit itself even to those most reluctant to receive it, its internal evidences becoming stronger and not weaker with the strictness of the examination to which they are submitted, it ought to deal with those things that may be demonstrated by the increasing knowledge and genius of man; anticipating therein his conclusions. Such a work, noble as may be its origin, must not refuse but court the test of natural philosophy, regarding it not as an antagonist but as its best support. As years pass on, and human science becomes more exact and more comprehensive, its conclusions must be found in unison therewith. When occasion arises, it should furnish us at least the foreshadowings of the great truths discovered by astronomy and geology, not offering for them the wild fictions of earlier ages, inventions of the infancy of man. It should tell us how suns and worlds are distributed in infinite space, and how in their successions they come forth in limitless time. It should say how far the dominion of God is carried out by law, and what is the point at which it is his pleasure to resort to his own good providence or his arbitrary will. How grand the description of this magnificent universe, written by the Omnipotent hand! Of man it should set forth his relations to other living beings, his place among them, his privileges and responsibilities. It should not leave him to grope his way through the vestiges of Greek philosophy, and to miss the truth at last; but it should teach him wherein true knowledge consists, anticipating the physical science, physical power, and physical well-being of our own times, nay, even unfolding for our benefit things that we are still ignorant of. The discussion of subjects so many and so high is not outside the scope of a work of such pretensions. Its manner of dealing with them is the only criterion it can offer of its authenticity to succeeding times.