Malthus

After alluding airily to the Vehmgericht, aqua tofana, Carbonari, the Marchioness de Brinvilliers, the Darwinian theory, the principles of Malthus, and the Ratcliff Highway murders, the article concluded by admonishing the Government and advocating a closer watch over foreigners in England.

The English obscurantist Thomas Robert Malthus came up with his misanthropic "theory" during the transition from the eighteenth to the nineteenth century.

Enough for us to understand that Heuschrecke is a disciple of Malthus ; and so zealous for the doctrine, that his zeal almost literally eats him up.