John Elliott Cairnes,
Popular Science Monthly
(1874)
“ At what particular stage in human history this new social force comes into play, we have no need here to inquire. What I am concerned to point out is that it is a new social force, wholly different in character from any which had hitherto helped to shape human destiny—wholly different, also, from those influences which have guided the unfolding either of the individual animal or of the species. We cannot, by taking thought, add a cubit to our stature. ”
