Malthusianism, a theory based on Thomas Malthus’s 18th-century observations, argues that population growth exceeds the availability of subsistence resources, resulting in unavoidable shortages. This idea has inspired a wide range of interpretations, from William Graham Sumner’s practical support for birth control as a personal moral obligation to Annie Besant’s criticism of Neo-Malthusianism as conflicting with spiritual values.
Critics such as Halliday Sutherland denounced Malthus’s “law of nature” as a rationale for poverty, while Leo Tolstoy highlighted its exploitation in reinforcing social inequalities. Writers like Hazlitt and Brailsford further challenged its strict numerical approach, portraying it as a means to suppress progressive ideas. These differing viewpoints illustrate Malthusianism as a debated framework through which economics, ethics, and social policy have been reinterpreted.