of a just system of distribution, but in the complication of modern industrial processes it is impossible to say what a man has produced. What proportion of the goods carried by a railway should belong to the goods porters concerned in their journey? When a surgeon saves a man's life by an operation, what proportion of the commodities which the man subsequently produces can the surgeon justly claim? Such problems are insoluble. And there is no special justice, even if they were soluble, in allowing to each man what he himself produces. Some men are stronger, healthier, cleverer, than others, but there is no reason for increasing these natural injustices by the artificial injustices of the law. The principle recommends itself partly as a way of abolishing the very rich, partly as a way of stimulating people to work hard. But the first of these objects can be better obtained in other ways, and the second ceases to be obviously desirable as soon as we cease to worship money.
Interest arises naturally in any community in which private property is unrestricted and theft is punished, because some of the most economical processes of production are slow, and those who have the skill to perform them may
