There is only one excuse for the extreme acrimony with which this book is written; and that excuse is but a bad one. Mr Sadler imagines that the theory of Mr Malthus is inconsistent with Christianity, and even with the purer forms of Deism. Now, even had this been the case, a greater degree of mildness and self-command than Mr Sadler has shown would have been becoming in a writer who had undertaken to defend the religion of charity. But, in fact, the imputation which has been thrown on Mr Malthus and his followers is so absurd as scarcely to deserve an answer. As it appears, however, in almost every page of Mr Sadler's book, we will say a few words respecting it. Mr Sadler describes Mr Malthus's principle in the following words:-- "It pronounces that there exists an evil in the principle of population; an evil, not accidental, but inherent; not of occasional occurrence, but in perpetual operation; not light, transient, or mitigated, but productive of miseries, compared with which all those inflicted by human institutions, that is to say, by the weakness and wickedness of man, however instigated, are 'light;' an evil, finally, for which there is no remedy save one, which had been long overlooked, and which is now enunciated in terms which evince anything rather than confidence. It is a principle, moreover, pre-eminently bold, as well as 'clear.' With a presumption, to call it by no fitter name, of which it may be doubted whether literature, heathen or Christian, furnishes a parallel, it professes to trace this supposed evil to its source, 'the laws of nature, which are those of God;' thereby implying, and indeed asserting, that the law by which the Deity multiplies his offspring, and that by which he makes provision for their sustentation, are different, and, indeed, irreconcilable." "This theory," he adds, "in the plain apprehension of the many, lowers the character of the Deity in that attribute, which, as Rousseau has well observed, is the most essential to him, his goodness; or otherwise, impugns his wisdom." Now nothing is more certain than that there is physical and moral evil in the world. Whoever, therefore, believes, as we do most firmly believe, in the goodness of God, must believe that there is no incompatibility between the goodness of God and the existence of physical and moral evil. If, then, the goodness of God be not incompatible with the existence of physical and moral evil, on what grounds does Mr Sadler maintain that the goodness of God is incompatible with the law of population laid down by Mr Malthus?