This volume comprises a collection of manuscripts by or relating to T.R. Malthus--recently discovered and previously unpublished--consisting of correspondence, sermons, essays and lecture notes on political economy and history. The manuscripts provide insights into Malthus' personal life--especially his relationships with his parents and his tutors, and also suggest hitherto unknown influences on his intellectual development. They represent a remarkable discovery, more than 150 years after Malthus' death.