Chapter 2

The teaching of Aristotle and Plato.--The teaching of Malthus.--His assailants.--Their illogical position.--Bonar on Malthus and his work.--The increase of food supplies held by Nitti to refute Malthus.--The increase of food and the decrease of births.--Mr. Spencer's biological theory--Maximum birth-rate determined by female capacity to bear children.--The pessimism of Spencer's law.--Wider definition of moral restraint.--Where Malthus failed to anticipate the future.--Economic law operative only through biological law.