"But in this progress of industry and happiness, each generation will be called to more extended enjoyments, and in consequence, by the physical constitution of the human frame, to an increase in the number of individuals. Must not there arrive a period then, when these laws, equally necessary, shall counteract each other? When the increase of the number of men surpassing their means of subsistence, the necessary result must be, either a continual diminution of happiness and population, a movement truly retrograde, or, at least, a kind of oscillation between good and evil? In societies arrived at this term, will not this oscillation be a constantly subsisting cause of periodical misery? Will it not mark the limit when all further amelioration will become impossible, and point out that term to the perfectibility of the human race, which it may reach
