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Chap. II. the existence of such a community; for this, manifestly, would be assuming the very point at issue, and reasoning in a circle. And even if it be admitted that the tendency to multiply must ultimately produce poverty, it cannot from this alone be predicated of existing poverty that it is due to this cause, until it be shown that there are no other causes which can account for it—a thing in the present state of government, laws, and customs, manifestly impossible.

This is abundantly shown in the "Essay on Population" itself. This famous book, which is much oftener spoken of than read, is still well worth perusal, if only as a literary curiosity. The contrast between the merits of the book itself and the effect it has produced, or is at least credited with (for though Sir James Stewart, Mr. Townsend, and others, share with Malthus the glory of discovering "the principle of population," it was the publication of the "Essay on Population" that brought it prominently forward), is, it seems to me, one of the most remarkable things in the history of literature; and it is easy to understand how Godwin, whose "Political Justice" provoked the "Essay on Population," should until his old age have disdained a reply. It begins with the assumption that population tends to increase in a geometrical ratio, while subsistence can at best be made to increase only in an arithmetical ratio—an assumption just as valid, and no more so, than it would be, from the fact that a puppy doubled the length of his tail while he added so many pounds to his weight, to assert a geometric progression of tail and an arithmetical progression of weight. And, the inference from the assumption is just such as Swift in satire might have credited to the savans of a previously dogless island, who, by bringing these two ratios together, might deduce the very "striking consequence" that by the time the dog grew to a weight of fifty pounds his tail would be over a mile long, and extremely difficult to wag, and hence recommend the prudential check of a bandage as the only alternative to the positive check of constant amputations.