The so-called paradox of freedom is the argument that freedom in the sense of absence of any constraining control must lead to very great restraint, since it makes the bully free to enslave the meek. The idea is, in a slightly different form, and with very different tendency, clearly expressed in Plato. Less well known is the paradox of tolerance: Unlimited tolerance must lead to the disappearance of tolerance. If we extend unlimited tolerance even to those who are intolerant, if we are not prepared to defend a tolerant society against the onslaught of the intolerant, then the tolerant will be destroyed, and tolerance with them. — In this formulation, I do not imply, for instance, that we should always suppress the utterance of intolerant philosophies; as long as we can counter them by rational argument and keep them in check by public opinion, suppression would certainly be unwise. But we should claim the right to suppress them if necessary even by force; for it may easily turn out that they are not prepared to meet us on the level of rational argument, but begin by denouncing all argument; they may forbid their followers to listen to rational argument, because it is deceptive, and teach them to answer arguments by the use of their fists or pistols. We should therefore claim, in the name of tolerance, the right not to tolerate the intolerant. We should claim that any movement preaching intolerance places itself outside the law, and we should consider incitement to intolerance and persecution as criminal, in the same way as we should consider incitement to murder, or to kidnapping, or to the revival of the slave trade, as criminal.
...But the Mahommedan religion increases, instead of lessening, the fury of intolerance. It was originally propagated by the sword, and ever since, its votaries have been subject, above the people of all other creeds, to this form of madness. In a moment the fruits of patient toil, the prospects of material prosperity, the fear of death itself, are flung aside. The more emotional Pathans are powerless to resist. All rational considerations are forgotten. Seizing their weapons, they become Ghazis—as dangerous and as sensible as mad dogs: fit only to be treated as such. While the more generous spirits among the tribesmen become convulsed in an ecstasy of religious bloodthirstiness, poorer and more material souls derive additional impulses from the influence of others, the hopes of plunder and the joy of fighting. Thus whole nations are roused to arms. Thus the Turks repel their enemies, the Arabs of the Soudan break the British squares, and the rising on the Indian frontier spreads far and wide. In each case civilisation is confronted with militant Mahommedanism. The forces of progress clash with those of reaction. The religion of blood and war is face to face with that of peace.