Religious intolerance is an idea that found its earliest expression in the Old Testament, where the Hebrew tribe depicts itself waging a campaign of genocide on the Palestinian peoples to steal their land. They justified this heinous behavior on the grounds that people not chosen by their god were wicked and therefore did not deserve to live or keep their land. In effect, the wholesale slaughter of the Palestinian peoples, eradicating their race with the Jew's own Final Solution, was the direct result of a policy of religious superiority and divine right. Joshua 6-11 tells the sad tale, and one needs only read it and consider the point of view of the Palestinians who were simply defending their wives and children and the homes they had built and the fields they had labored for. The actions of the Hebrews can easily be compared with the American genocide of its native peoples - or even, ironically, the Nazi Holocaust. With the radical advent of Christianity, this self-righteous intolerance was borrowed from the Jews, and a new twist was added. The conversion of infidels by any means possible became the newfound calling card of religious fervor, and this new experiment in human culture spread like wildfire. By its very nature, how could it not have? Islam followed suit, conquering half the world in brutal warfare and, much like its Christian counterpart, it developed a new and convenient survival characteristic: the destruction of all images and practices attributed to other religions. Muslims destroyed millions of statues and paintings in India and Africa, and forced conversion under pain of death (or by more subtle tricks: like taxing only non-Muslims), while the Catholic Church busily burned books along with pagans, shattering statues and defacing or destroying pagan art - or converting it to Christian use. Laws against pagan practices and heretics were in full force throughrout Europe by the sixth century, and as long as those laws were in place it was impossible for anyone to refuse the tenets of Christianity and expect to keep their property or their life. Similar persecution and harassment continues in Islamic countries even to this day, officially and unofficially.
Until every soul is freely permitted to investigate every book, and creed, and dogma for itself, the world cannot be free. Mankind will be enslaved until there is mental grandeur enough to allow each man to have his thought and say. This earth will be a paradise when men can, upon all these questions differ, and yet grasp each other's hands as friends. It is amazing to me that a difference of opinion upon subjects that we know nothing with certainty about, should make us hate, persecute, and despise each other. Why a difference of opinion upon predestination, or the trinity, should make people imprison and burn each other seems beyond the comprehension of man; and yet in all countries where Christians have existed, they have destroyed each other to the exact extent of their power. Why should a believer in God hate an atheist? Surely the atheist has not injured God, and surely he is human, capable of joy and pain, and entitled to all the rights of man. Would it not be far better to treat this atheist, at least, as well as he treats us?Christians tell me that they love their enemies, and yet all I ask is—not that they love their enemies, not that they love their friends even, but that they treat those who differ from them, with simple fairness.We do not wish to be forgiven, but we wish Christians to so act that we will not have to forgive them. If all will admit that all have an equal right to think, then the question is forever solved; but as long as organized and powerful churches, pretending to hold the keys of heaven and hell, denounce every person as an outcast and criminal who thinks for himself and denies their authority, the world will be filled with hatred and suffering. To hate man and worship God seems to be the sum of all the creeds.