John Stuart Mill,
Principles of Political Economy
(1871)
“ Before attention had been directed to the principle of population as the active force in determining the remuneration of labour, the increase of mankind was virtually treated as a constant quantity: it was, at all events, assumed that in the natural and normal state of human affairs population must constantly increase, from which it followed that a constant increase of the means of support was essential to the physical comfort of the mass of mankind. ”
