But mark the emotions which affected the mind of another excellent observer of Nature, the admirer of Newton, and the person who has put the finishing stroke to the Newtonian philosophy, by showing that the acceleration of the moon's mean motion, is the genuine result of a gravitation decreasing in the precise duplicate ratio of the distance inversely; I mean Mr. Delaplace, one of the most brilliant ornaments of the French academy of sciences. He has lately published the _Systeme du Monde_, a most beautiful compend of astronomy and of the Newtonian philosophy. Having finished his work with the same observation, "That a gravitation inversely proportional to the squares of the distances was the only principle which could unite material Nature into a permanent system;" _he_ also sits down--surveys the scene--points out the parts which he had brought within our ken--and then makes this reflection: "Beheld in its totality, astronomy is the noblest monument of the human mind, its chief title to intelligence. But, seduced by the illusions of sense, and by self-conceit, we have long considered ourselves as the centre of these motions; and our pride has been punished by the groundless fears which we have created to ourselves. We imagine, forsooth, that all this is for us, and that the stars influence our destinies! But the labours of ages have convinced us of our error, and we find ourselves on an insignificant planet, almost imperceptible in the immensity of space. But the sublime discoveries we have made richly repay this humble situation. Let us cherish these with care, as the delight of thinking beings--they have destroyed our mistakes as to our relation to the rest of the universe; errors which were the more fatal, because the social Order depends on justice and truth alone. Far be from us the dangerous maxim, that it is sometimes useful to depart from these, and to deceive men, in order to insure their happiness; but cruel experience has shewn us that these laws are never totally extinct."