Malthus

The misery check, as Malthus called all those influences that are not prudential, is an ugly phrase not fully justified.

Malthus shows the necessity of observing other collateral results.

Mill was an awkward antagonist, and Malthus certainly not conspicuous for closeness of logic.

Malthus again reckons among vices practices which limit the population without causing 'misery' directly.