If the Pentateuch be true, religious persecution is a duty. The dungeons of the Inquisition were temples, and the clank of every chain upon the limbs of heresy was music in the ear of God. If the Pentateuch was inspired, every heretic should be destroyed; and every man who advocates a fact inconsistent with the sacred book, should be consumed by sword and flame.In the Old Testament no one is told to reason with a heretic, and not one word is said about relying upon argument, upon education, nor upon intellectual development—nothing except simple brute force. Is there to-day a christian who will say that four thousand years ago, it was the duty of a husband to kill his wife if she differed with him upon the subject of religion? Is there one who will now say that, under such circumstances, the wife ought to have been killed? Why should God be so jealous of the wooden idols of the heathen? Could he not compete with Baal? Was he envious of the success of the Egyptian magicians? Was it not possible for him to make such a convincing display of his power as to silence forever the voice of unbelief? Did this God have to resort to force to make converts? Was he so ignorant of the structure of the human mind as to believe all honest doubt a crime? If he wished to do away with the idolatry of the Canaanites, why did he not appear to them? Why did he not give them the tables of the law? Why did he only make known his will to a few wandering savages in the desert of Sinai? Will some theologian have the kindness to answer these questions? Will some minister, who now believes in religious liberty, and eloquently denounces the intolerance of Catholicism, explain these things; will he tell us why he worships an intolerant God? Is a god who will burn a soul forever in another world, better than a christian who burns the body for a few hours in this? Is there no intellectual liberty in heaven? Do the angels all discuss questions on the same side? Are all the investigators in perdition? Will the penitent thief, winged and crowned, laugh at the honest folks in hell? Will the agony of the damned increase or decrease the happiness of God? Will there be, in the universe, an eternal auto da fe?
...Whilst on board the Beagle I was quite orthodox, and I remember being heartily laughed at by several of the officers... for quoting the Bible as an unanswerable authority on some point of morality... But I had gradually come by this time, i.e., 1836 to 1839, to see that the Old Testament from its manifestly false history of the world, with the Tower of Babel, the rainbow at sign, &c., &c., and from its attributing to God the feelings of a revengeful tyrant, was no more to be trusted than the sacred books of the Hindoos, or the beliefs of any barbarian....By further reflecting that the clearest evidence would be requisite to make any sane man believe in the miracles by which Christianity is supported, (and that the more we know of the fixed laws of nature the more incredible do miracles become), that the men at that time were ignorant and credulous to a degree almost uncomprehensible by us, that the Gospels cannot be proved to have been written simultaneously with the events, that they differ in many important details, far too important, as it seemed to me, to be admitted as the usual inaccuracies of eyewitnesses; by such reflections as these, which I give not as having the least novelty or value, but as they influenced me, I gradually came to disbelieve in Christianity as a divine revelation. The fact that many false religions have spread over large portions of the earth like wild-fire had some weight with me. Beautiful as is the morality of the New Testament, it can be hardly denied that its perfection depends in part on the interpretation which we now put on metaphors and allegories.But I was very unwilling to give up my belief... Thus disbelief crept over me at a very slow rate, but was at last complete. The rate was so slow that I felt no distress, and have never since doubted even for a single second that my conclusion was correct. I can indeed hardly see how anyone ought to wish Christianity to be true; for if so the plain language of the text seems to show that the men who do not believe, and this would include my Father, Brother and almost all of my friends, will be everlastingly punished. And this is a damnable doctrine.
...Whilst on board the Beagle I was quite orthodox, and I remember being heartily laughed at by several of the officers... for quoting the Bible as an unanswerable authority on some point of morality... But I had gradually come by this time, i.e., 1836 to 1839, to see that the Old Testament from its manifestly false history of the world, with the Tower of Babel, the rainbow at sign, &c., &c., and from its attributing to God the feelings of a revengeful tyrant, was no more to be trusted than the sacred books of the Hindoos, or the beliefs of any barbarian....By further reflecting that the clearest evidence would be requisite to make any sane man believe in the miracles by which Christianity is supported, (and that the more we know of the fixed laws of nature the more incredible do miracles become), that the men at that time were ignorant and credulous to a degree almost uncomprehensible by us, that the Gospels cannot be proved to have been written simultaneously with the events, that they differ in many important details, far too important, as it seemed to me, to be admitted as the usual inaccuracies of eyewitnesses; by such reflections as these, which I give not as having the least novelty or value, but as they influenced me, I gradually came to disbelieve in Christianity as a divine revelation. The fact that many false religions have spread over large portions of the earth like wild-fire had some weight with me. Beautiful as is the morality of the New Testament, it can be hardly denied that its perfection depends in part on the interpretation which we now put on metaphors and allegories.But I was very unwilling to give up my belief... Thus disbelief crept over me at a very slow rate, but was at last complete. The rate was so slow that I felt no distress, and have never since doubted even for a single second that my conclusion was correct. I can indeed hardly see how anyone ought to wish Christianity to be true; for if so the plain language of the text seems to show that the men who do not believe, and this would include my Father, Brother and almost all of my friends, will be everlastingly punished. And this is a damnable doctrine.