tiger in a nursery, a venomous snake in the garden, or a fox in the poultry yard. No society could be constructed on the assumption that such extermination is a violation of the creature's right to live, and therefore must not be allowed. And then at once arises the danger into which morality has led us: the danger of persecution. One Christian spreading his doctrines may seem more mischievous than a dozen thieves: throw him therefore to the lions. A lying or disobedient child may corrupt a whole generation and make human Society impossible: therefore thrash the vice out of him. And so on until our whole system of abortion, intimidation, tyranny, cruelty and the rest is in full swing again. The Common Sense of Toleration The real safeguard against this is the dogma of Toleration. I need not here repeat the compact treatise on it which I prepared for the Joint Committee on the Censorship of Stage Plays, and prefixed to The Shewing Up of Blanco Posnet. It must suffice now to say that the present must not attempt to schoolmaster the future by pretending to know good from evil in tendency, or protect citizens against shocks to their opinions and convictions, moral, political or religious: in other words it must not persecute doctrines of any kind, or what is called bad taste, and must insist on all persons facing such shocks as they face frosty weather or any of the other disagreeable, dangerous, or bracing incidents of freedom. The expediency of Toleration has been forced on us by the fact that progressive enlightenment depends on a fair hearing for doctrines which at first appear seditious, blasphemous, and immoral, and which deeply shock people who never think originally, thought being with them merely a habit and an echo. The deeper ground for Toleration is the nature of creation, which, as we now know, proceeds by evolution. Evolution finds its way by experiment; and this finding of the way varies according to the stage of development reached, from the blindest groping along the line of least resistance to intellectual speculation, with its practical sequel of hypothesis and experimental verification; or to observation, induction, and deduction; or even into so rapid and intuitive an integration of all these processes in a single brain that we get the inspired guess of the man of genius and the desperate resolution of the teacher of new truths who is first slain as a blasphemous apostate and then worshipped as a prophet.