rect certain errors at particular times. Able legislators ought to consider them as models, and honest patriots ought never to lose sight of them, or any proper opportunity of transplanting the wisest of their maxims into their own governments, as far as they are adapted to their particular circumstances, and will give no occasion to dangerous convulsions. But this is all that can be expected. Though such ingenious romances should chance to be read and admired, jealous and selfish politicians need not be alarmed. Such statesmen need not fear that ever such airy systems shall be able to destroy their craft, or disappoint them of their intention to sacrifice the interests of mankind to their own avarice or ambition. There is too powerful a charm, which works secretly in favour of such politicians, which will for ever defeat all attempts to establish a perfect government. There is no need of miracles for this purpose. The vices of mankind are sufficient. And we need not doubt but Providence will make use of them, for preventing the establishment of governments which are by no means suitable to the present circumstances of the earth."—See "Various Prospects of Mankind, Nature, and Providence," chap. 4. p. 113. 1761.
Here then we have not only the same argument stated, but stated in the same connexion, and brought to bear on the very same subject to which it is applied by the author of the Essay on Population. The principle, and the consequences deduced from it, are exactly the same. It may happen (and often does) that one man is the first to make a particular discovery or observation, and that another draws from it an important inference of which the former was not at all aware. But this is not the case in the present instance. As far as general reasoning will go, it is impossible that any thing should be stated more clearly, more fully and explicitly, than Wallace has here stated the argument against the progressive and ultimate amelioration of human society, from the sole principle of population. We have already seen that the addition which Mr. Malthus has made to the argument, from the geometrical and arithmetical series, is a fallacy, and not an im-
