Charles H. Spurgeon on Psalms 92:6

A brutish man knoweth not. How universally do men strive, by the putrid joys of sense and passion, to destroy the fineness of the sensibilities which God has given them. This mind, which might behold a world of glory in created things, and look through them as through a transparent veil to things infinitely more glorious, signified or contained within the covering, is as dull and heavy as a piece of anthracite coal. Who made it so? Alas, habits of sense and sin have done this. If from childhood the soul had been educated for God, in habits accordant with its spiritual nature, it would be full of life, love, and sensibility, in harmony with all lovely things in the natural world, beholding the spiritual world through the natural, alive to all excitement from natural and intellectual beauty, and as ready to its duty as a child to its play. What a dreadful destruction of the mind's inner sensibilities results from a sensual life! What a decline, decay, and paralysis of its intuitive powers, so that the very existence of such a thing as spiritual intuition, in reference to a spiritual world, may be questioned, if not denied! A man may be frightfully successful in such a process of destruction if long enough continued, upon his own nature. "Who can read without indignation of Kant", remarks De Quincey, "that at his own table in social sincerity and confidential talk, let him say what he would in his books, he exulted in the prospect of absolute and ultimate annihilation; that he planted his glory in the grave, and was ambitious of rotting for ever! The King of Prussia, though a personal friend of Kant's, found himself obliged to level his State thunders at some of his doctrines, and terrified him in his advance; else I am persuaded that Kant would have formally delivered Atheism from the professor's chair, and would have enthroned the horrid ghoulish creed, which privately he professed, in the University of Königsberg. It required the artillery of a great king to make him pause. The fact is, that as the stomach has been known by means of its natural secretion, to attack not only whatsoever alien body is introduced within it, but also (as John Hunter first showed), sometimes to attack itself and its own organic structure; so, and with the same preternatural extension of instinct, did Kant carry forward his destroying functions, until he turned them upon his own hopes, and the pledges of his own superiority to the dog, the ape, the worm." —George B. Cheever, in "Voices of Nature", 1852.