As the world's population continues to grow at a frighteningly rapid rate, Malthus's classic warning against overpopulation gains increasing importance. An Essay on the Principle of Population (1798) examines the tendency of human numbers to outstrip their resources, and argues that checks in the form of poverty, disease, and starvation are necessary to keep societies from moving beyond their means of subsistence. Malthus's simple but powerful argument was controversial in his time; today his name has become a byword for active concern about humankind's demographic and ecological prospects....

The following Essay owes its origin to a conversation with a friend, on the subject of Mr Godwin's essay on avarice and profusion, in his Enquirer. The discussion started the general question of the future improvement of society, and the Author at first sat down with an intention of merely stating his thoughts to his friend, upon paper, in a clearer manner than he thought he could do in conversation. But as the subject opened upon him, some ideas occurred, which he did not recollect to have met with before; and as he conceived that every least light, on a topic so generally interesting, might...