Now can chance have evolved this universal fitness, and the souls that own their allegiance to it? Is it not the clear self-revelation of a God, one, all-wise, omnipotent? Has it any other possible solution? Bears it not, in inscriptions that girdle the universe in letters of light, the declarations of the Hebrew seer, "In the beginning God created the heavens and the earth," and "The Lord our God is one Lord"? I am not disposed to cavil at the argument from design in the structure and adaptations of any one organized being; but immeasurably more cogent is this argument from a consenting universe, in which filaments of fitness, relation, and use cross and recross one another from bound to bound, from sun to star, from star to earth, from the greatest to the least, from the order of the heavens to the zoöphyte and the microscopic animalcule. In the human conscience I recognize at once the revelation and the perpetual witness of this all-pervading adaptation, this universal harmony. Conscience is the God within, not in figure, but in fact. It is the mode in which He who is enshrined in all being, who lives in all life, takes up his abode, holds his perpetual court, erects his eternal judgment-seat, within the human soul. We pass to the consideration of the moral attributes of the Creator. I have spoken of moral distinctions as logically separable from and independent of the Divine nature. From this position alone can we establish the holiness, justice, and mercy of the Divine Being. In order to show this, let me ask your attention to the distinction between necessary and contingent truths; that is, between truths which have an intrinsic validity, which always were and cannot by any possibility be otherwise than true, and truths which were made true, which began to be, and the opposite of which might have been. Mathematical truth is necessary and absolute truth,--not made truth even by the ordinance of the Supreme Being, but truth from the very nature of things, truth co-eternal with God. Omnipotence cannot make two and two five, or render the sum of the angles of a triangle more or less than two right angles, or construct a square and a circle of both equal perimeter and equal surface. In our conception of mathematical truth we are conscious that it must have been true before all worlds, and would be equally true had no substance that could be measured or calculated ever been created. Every mathematical proposition is an inherent property or condition of the infinite space identical with the Divine omnipresence, or of the infinite duration identical with the Divine eternity.