provement. The conclusion itself insisted on in the above passage, by Wallace, appears to us no better than a contradiction in terms. Of the possibility of realising such a Utopian system as he first supposes, that is, of making every motive and principle of action in the human mind absolutely and completely subservient to the dictates of reason and the calculation of consequences, we do not say a word; but we do say, that if such a system is possible, and if it were realised, it would not be destroyed by the principle of population, that is, by the unrestrained propagation of the species from a blind, headlong, instinctive, irrational impulse, and with a total and sovereign disregard of the fatal and overwhelming consequences which would ensue. The argument is a solecism; but if Wallace shewed his ingenuity in inventing it, Mr. Malthus has not shown his judgment in adopting it. Through the whole of the first edition of the Essay on Population, the author assumed the impulse to propagate the species as a law, and a physical necessity of the same force as that of preserving the individual, or, in other words, he sets down, 1st, hunger, 2d, the sexual appetite, as two co-ordinate, and equally irresistible principles of action. It was necessary that he should do this, in order to bear out his conclusion against the Utopian systems of his antagonists; for, in order to maintain that this principle of population would be proof against the highest possible degree of reason, we must suppose it to be an absolute physical necessity. If reason has any practical power over it, the highest reason must be able to attain an habitual power over it. Mr. Malthus, however, having by the rigid interpretation which he gave to his favourite principle, or by what he called the iron law of necessity, succeeded in laying the bugbear of the modern philosophy, relaxed considerably in the second and following editions of his book, in which he introduced moral restraint as a third check upon the principle of population, in addition to the two only ones of vice and misery, with which he before combated the Utopian philosophers; and though he does not lay an exaggerated or consistent stress on this
