Who can calculate the soul-havoc of a Rousseau, going on with a very enthusiasm of iniquity, with fiery imagination seizing upon all the impulsive natures of his day? or David Hume, who employed his life as a spider employs its summer, in spinning out silken webs to trap the unwary? or Voltaire, the most learned man of his day, marshaling a great host of skeptics, and leading them out in the dark land of infidelity? or Gibbon, who showed an uncontrollable grudge against religion in his history of one of the most fascinating periods of the world's existence--the Decline and Fall of the Roman Empire--a book in which, with all the splendors of his genius, he magnified the errors of Christian disciples, while, with a sparseness of notice that never can be forgiven, he treated of the Christian heroes of whom the world was not worthy? Oh, men of stout physical health, men of great mental stature, men of high social position, men of great power of any sort, I want you to understand your power, and I want you to know that that power devoted to God will be a crown on earth, to you typical of a crown in heaven; but misguided, bedraggled in sin, administrative of evil, God will thunder against you with His condemnation in the day when millionaire and pauper, master and slave, king and subject, shall stand side by side in the judgment, and money-bags, and judicial ermine, and royal robe shall be riven with the lightnings. Behold also, how a giant may be slain of a woman. Delilah started the train of circumstances that pulled down the temple of Dagon about Samson's ears. And tens of thousands of giants have gone down to death and hell through the same impure fascinations. It seems to me that it is high time that pulpit and platform and printing-press speak out against the impurities of modern society. Fastidiousness and Prudery say: "Better not speak--you will rouse up adverse criticism; you will make worse what you want to make better; better deal in glittering generalities; the subject is too delicate for polite ears." But there comes a voice from heaven overpowering the mincing sentimentalities of the day, saying: "Cry aloud, spare not, lift up thy voice like a trumpet, and show my people their transgressions and the house of Jacob their sins." The trouble is that when people write or speak upon this theme they are apt to cover it up with the graces of belles-lettres, so that the crime is made attractive instead of repulsive. Lord Byron in "Don Juan" adorns this crime until it smiles like a May queen. Michelet, the great French writer, covers it up with bewitching rhetoric until it glows like the rising sun, when it ought to be made loathsome as a small-pox hospital. There are to-day influences abroad which, if unresisted by the pulpit and the printing-press, will turn New York and Brooklyn into Sodom and Gomorrah, fit only for the storm of fire and brimstone that whelmed the cities of the plain.