(Discusses the question, to what extent one person may hold another to the pledge of love.) Once upon a time I knew an Anarchist shoemaker, the same who had me sent to jail for playing tennis on Sunday, as I have narrated in "The Brass Check." I remember arguing with him concerning his ideas of sex, which were of the freest. I can hear the very tones of his voice as he put the great unanswerable question: "What are you going to do about the problem of jealousy?" And I had no response at hand; for jealousy is truly a most cruel and devastating and unlovely emotion; and yet, how can you escape it, if you are going to preserve monogamy? The Anarchist shoemaker's solution was to break down all the prejudices against sexual promiscuity. Free and unlimited license was every person's right, and for any other person to interfere was enslavement, for any other person to criticize was superstition. But the power of superstition is strong in the world, and the shoemaker found men resentful of his teachings, and disposed to confiscate the rights of their wives and daughters. Hence the shoemaker's disapproval of jealousy. Other men, less purely physiological in their attitude to sex, have wrestled with this same problem of jealousy. H. G. Wells has a novel, "In the Days of the Comet," in which he portrays two men, both nobly and truly in love with the same woman. One in a passion of jealousy is about to murder the other, when a great social transformation is magically brought about, and the would-be murderer wakes up to universal love, and the two men nobly and lovingly share the same woman. Shelley also dreamed this dream, inviting two women to share him. I have known others who tried it, but never permanently. I do not say that it never has succeeded, or that it never can succeed. In this book I am renouncing the future--I am trying to give practical advice to people, for the conduct of their lives here and now, and my advice on this point is that polygamous and polyandrous experiments in modern capitalist society cost more than they are worth.