Thomas Robert Malthus “An Essay on the Principle of Population, Or, a View of Its Past and Present Effects on Human Happiness: With an Inquiry Into Our Prospects Respecting the Future Removal Or Mitigation of the Evils which it Occasions”, Cambridge University Press
Letter sent to Adolf Hitler on July 12, 1934. "Nazi Conspiracy and Aggression". Office of the United States Chief of Counsel For Prosecution of Axis Criminality publication, 1946.