It does not, however, seem to me exactly correct to say that the theory of development by natural selection or survival of the fittest is extended Malthusianism, for the doctrine of Malthus did not originally and does not necessarily involve the idea of progression. But this was soon added to it. McCulloch[1] attributes to the "principle of increase" social improvement and the progress of the arts, and declares that the poverty that it engenders acts as a powerful stimulus to the development of industry, the extension of science and the accumulation of wealth by the upper and middle classes, without which stimulus society would quickly sink into apathy and decay. What is this but the recognition in regard to human society of the developing effects of the "struggle for existence" and "survival of the fittest," which we are now told on the authority of natural science have been the means which Nature has employed to bring forth all the infinitely diversified and wonderfully adapted forms which the teeming life of the globe assumes? What is it but the recognition of the force, which, seemingly cruel and remorseless, has yet in the course of unnumbered ages developed the higher from the lower type, differentiated the man and the monkey, and made the Nineteenth Century succeed the age of stone?
Thus commended and seemingly proved, thus linked and buttressed, the Malthusian theory—the doctrine that poverty is due to the pressure of population against subsistence, or, to put it in its other form, the doctrine that the tendency to increase in the number of laborers must always tend to reduce wages to the minimum on which laborers can reproduce—is now generally accepted as an unquestionable truth, in the light of which social phenomena are to be explained, just as for ages the
- ↑ Note IV. to Wealth of Nations.
