Unbelievers refuse to submit to the asserted authority, and deny this claim of control over human thought: they allege that every effort at freethinking must provoke sturdier thought. Take one clear gain to humanity consequent on unbelief, i.e. in the abolition of slavery in some countries, in the abolition of the slave trade in most civilised countries, and in the tendency to its total abolition. I am unaware of any religion in the world which in the past forbade slavery. The professors of Christianity for ages supported it; the Old Testament repeatedly sanctioned it by special laws; the New Testament has no repealing declaration. Though we are at the close of the nineteenth century of the Christian era, it is only during the past three-quarters of a century that the battle for freedom has been gradually won. It is scarcely a quarter of a century since the famous emancipation amendment was carried to the United States Constitution. And it is impossible for any well-informed Christian to deny that the abolition movement in North America was most steadily and bitterly opposed by the religious bodies in the various States. Henry Wilson, in his "Rise and Fall of the Slave Power in America"; Samuel J. May, in his "Recollections of the Anti-Slavery Conflict"; and J. Greenleaf Whittier, in his poems, alike are witnesses that the Bible and pulpit, the Church and its great influence, were used against abolition and in favor of the slaveowner. I know that Christians in the present day often declare that Christianity had a large share in bringing about the abolition of slavery, and this because men professing Christianity were abolitionists. I plead that these so-called Christian abolitionists were men and women whose humanity, recognising freedom for all, was in this in direct conflict with Christianity. It is not yet fifty years since the European Christian powers jointly agreed to abolish the slave trade. What of the effect of Christianity on these powers in the centuries which had preceded? The heretic Condorcet pleaded powerfully for freedom whilst Christian France was still slave-holding. For many centuries Christian Spain and Christian Portugal held slaves. Porto Rico freedom is not of long date; and Cuban emancipation is even yet newer. It was a Christian King, Charles 5th, and a Christian friar, who founded in Spanish America the slave trade between the Old World and the New. For some 1800 years, almost, Christians kept slaves, bought slaves, sold slaves, bred slaves, stole slaves. Pious Bristol and godly Liverpool less than 100 years ago openly grew rich on the traffic. Daring the ninth century week Christians sold slaves to the Saracens. In the eleventh century prostitutes were publicly sold as slaves in Rome, and the profit went to the Church.