Let me remark in the passing, that while Turrettine, one of the greatest of theologians, failed, as we have seen, to find in Scripture the fact of astronomic _construction_, La Place, one of the greatest of the astronomers, failed in a manner equally signal to find in his science the fact of astronomic _authorship_. The profound Frenchman (whom Sir David Brewster well characterizes as "the philosopher to whom posterity will probably assign the place next to Newton "), by demonstrating that certain irregularities in the motion of the heavenly bodies, which had been supposed to indicate a future termination to the whole, were but mere oscillations, subject to periodic correction, and indicative of no such termination in consequence, demonstrated also that, from all that appears, the present astronomical movements might go on forever. And as he could find in the solar system no indications of an end, so was he unable, he said, to find in it any trace of a beginning. He failed in discovering in all astronomy the fact of authorship, just as Turrettine had failed in finding in all Scripture the fact of astronomic construction. And here lies, I am inclined to think, the true line between revelation and science,--a line drawn of old with a God-derived precision, which can be rightly appreciated neither by mere theologians like Turrettine, nor by mere men of science like La Place, but which is notwithstanding fraught with an evidence direct in its bearing on the truth of Scripture. That great fact, moral in its influence, of the authorship of the heavens and earth, which the science of La Place failed of itself to discover, and which was equally unknown to the ancient philosophers, God has revealed. It is "through faith we understand that the worlds were formed by the word of God, so that things which are seen were not made of things which do appear." And, on the other hand, the great truths, physical in their bearing, to the discovery of which science is fully competent, God did not reveal, but left them to be developed piecemeal by the unassisted human faculties. And that ability of nicely drawing the line between the two classes of truths in a very remote age of the world, which we find manifested in the oldest of the Scriptural books, I must regard as an ability which could have been derived only through inspiration, and from God alone.