John Stuart Mill on the moral corruption of religion

From John Stuart Mill's Autobiography comes this indictment of religion, and of Christianity in particular, as "the greatest enemy of morality". Incidentally, a section near the end of this passage was credited by Bertrand Russell as persuading him against the First Cause Argument for the existence of God ("It is maintained that everything we see in this world has a cause, and as you go back in the chain of causes further and further you must come to a First Cause, and to that First Cause you give the name of God."):

Finding, therefore, no halting place in Deism, he remained in a state of perplexity, until, doubtless after many struggles, he yielded to the conviction, that, concerning the origin of things nothing whatever can be known. This is the only correct statement of his opinion; for dogmatic atheism he looked upon as absurd; as most of those, whom the world has considered Atheists, have always done. These particulars are important, because they show that my father's rejection of all that is called religious belief, was not, as many might suppose, primarily a matter of logic and evidence: the grounds of it were moral, still more than intellectual. He found it impossible to believe that a world so full of evil was the work of an Author combining infinite power with perfect goodness and righteousness. His intellect spurned the subtleties by which men attempt to blind themselves to this open contradiction. The Sabaean, or Manichaean theory of a Good and Evil Principle, struggling against each other for the government of the universe, he would not have equally condemned; and I have heard him express surprise, that no one revived it in our time. He would have regarded it as a mere hypothesis; but he would have ascribed to it no depraving influence. As it was, his aversion to religion, in the sense usually attached to the term, was of the same kind with that of Lucretius: he regarded it with the feelings due not to a mere mental delusion, but to a great moral evil. He looked upon it as the greatest enemy of morality: first, by setting up factitious excellencies, -- belief in creeds, devotional feelings, and ceremonies, not connected with the good of human kind, -- and causing these to be accepted as substitutes for genuine virtues: but above all, by radically vitiating the standard of morals; making it consist in doing the will of a being, on whom it lavishes indeed all the phrases of adulation, but whom in sober truth it depicts as eminently hateful. I have a hundred times heard him say, that all ages and nations have represented their gods as wicked, in a constantly increasing progression, that mankind have gone on adding trait after trait till they reached the most perfect conception of wickedness which the human mind can devise, and have called this God, and prostrated themselves before it. This ne plus ultra of wickedness he considered to be embodied in what is commonly presented to mankind as the creed of Christianity. Think (he used to say) of a being who would make a Hell -- who would create the human race with the infallible foreknowledge, and therefore with the intention, that the great majority of them were to be consigned to horrible and everlasting torment. The time, I believe, is drawing near when this dreadful conception of an object of worship will be no longer identified with Christianity; and when all persons, with any sense of moral good and evil, will look upon it with the same indignation with which my father regarded it. My father was as well aware as anyone that Christians do not, in general, undergo the demoralizing consequences which seem inherent in such a creed, in the manner or to the extent which might have been expected from it. The same slovenliness of thought, and subjection of the reason to fears, wishes, and affections, which enable them to accept a theory involving a contradiction in terms, prevents them from perceiving the logical consequences of the theory. Such is the facility with which mankind believe at one and the same time things inconsistent with one another, and so few are those who draw from what they receive as truths, any consequences but those recommended to them by their feelings, that multitudes have held the undoubting belief in an Omnipotent Author of Hell, and have nevertheless identified that being with the best conception they were able to form of perfect goodness. Their worship was not paid to the demon which such a being as they imagined would really be, but to their own idea of excellence. The evil is, that such a belief keeps the ideal wretchedly low; and opposes the most obstinate resistance to all thought which has a tendency to raise it higher. Believers shrink from every train of ideas which would lead the mind to a clear conception and an elevated standard of excellence, because they feel (even when they do not distinctly see) that such a standard would conflict with many of the dispensations of nature, and with much of what they are accustomed to consider as the Christian creed. And thus morality continues a matter of blind tradition, with no consistent principle, nor even any consistent feeling, to guide it.

It would have been wholly inconsistent with my father's ideas of duty, to allow me to acquire impressions contrary to his convictions and feelings respecting religion: and he impressed upon me from the first, that the manner in which the world came into existence was a subject on which nothing was known: that the question, "Who made me?" cannot be answered, because we have no experience or authentic information from which to answer it; and that any answer only throws the difficulty a step further back, since the question immediately presents itself, Who made God? He, at the same time, took care that I should be acquainted with what had been thought by mankind on these impenetrable problems. I have mentioned at how early an age he made me a reader of ecclesiastical history; and he taught me to take the strongest interest in the Reformation, as the great and decisive contest against priestly tyranny for liberty of thought.