The work offers a systematic study of Thomas Malthus’s Essay on Population, tracing its genesis, historical context, and the development of its central claims about population and subsistence. It situates those claims within contemporary political economy, examines their theoretical roots and logical consequences, and explores the author’s wider moral and political philosophy. The book surveys the extensive contemporary criticism and replies, separating popular caricatures from the original arguments and assessing which doctrines retain explanatory value. A final biographical section links the thinker’s character and circumstances to the formation and reception of his ideas.