Persecutions and martyrdoms, however, are trifles compared to the mischief done by censorships in delaying the general march of enlightenment. This can be brought home to us by imagining what would have been the effect of applying to all literature the censorship we still apply to the stage. The works of Linnaeus and the evolutionists of 1790-1830, of Darwin, Wallace, Huxley, Helmholtz, Tyndall, Spencer, Carlyle, Ruskin, and Samuel Butler, would not have been published, as they were all immoral and heretical in the very highest degree, and gave pain to many worthy and pious people. They are at present condemned by the Greek and Roman Catholic censorships as unfit for general reading. A censorship of conduct would have been equally disastrous. The disloyalty of Hampden and of Washington; the revolting immorality of Luther in not only marrying when he was a priest, but actually marrying a nun; the heterodoxy of Galileo; the shocking blasphemies and sacrileges of Mohammed against the idols whom he dethroned to make way for his conception of one god; the still more startling blasphemy of Jesus when he declared God to be the son of man and himself to be the son of God, are all examples of shocking immoralities (every immorality shocks somebody), the suppression and extinction of which would have been more disastrous than the utmost mischief that can be conceived as ensuing from the toleration of vice. These facts, glaring as they are, are disguised by the promotion of immoralities into moralities which is constantly going on. Christianity and Mohammedanism, once thought of and dealt with exactly as Anarchism is thought of and dealt with today, have become established religions; and fresh immoralities are prosecuted in their name. The truth is that the vast majority of persons professing these religions have never been anything but simple moralists. The respectable Englishman who is a Christian because he was born in Clapham would be a Mohammedan for the cognate reason if he had been born in Constantinople. He has never willingly tolerated immorality. He did not adopt any innovation until it had become moral; and then he adopted it, not on its merits, but solely because it had become moral. In doing so he never realized that it had ever been immoral: consequently its early struggles taught him no lesson; and he has opposed the next step in human progress as indignantly as if neither manners, customs, nor thought had ever changed since the beginning of the world. Toleration must be imposed on him as a mystic and painful duty by his spiritual and political leaders, or he will condemn the world to stagnation, which is the penalty of an inflexible morality. WHAT TOLERATION MEANS