Q: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
In the extended title of his most famous work this economist claims to respond to the speculations of William Godwin and the Marquis de Condorcet. From 1805-34 professor at the East India Company's college at Haileybury, he wrote 1820's Principles of Political Economy and An Inquiry into the Nature and Progress of Rent, but is best-known for a 1798 work in which he uses the argument that one element of society increases at an arithmetic rate, while another increases at a geometric rate, implying the need for moral restriant, crime, disease, war, and vice. FTP, who was this author of An Essay on the Principle of Population
A:
Social Science