The Rev. Thomas Robert Malthus FRS (13 February 1766 – 23 December 1834[1]) was an English political economist and demographer.
His main contribution was to draw attention to the potential dangers of population growth: "The power of population is indefinitely greater than the power in the earth to produce subsistence for man." [2] For Malthus, a clergyman, this was divinely imposed to teach virtuous behaviour: optimistic ideas of social reform were doomed to failure.[3] He thus presented to the reader a dystopia, negative, image of the world, in contrast to the eutopias of writers such as Rousseau and William Godwin. A population crash based on this principle, (outlined in Malthus's An Essay on the Principle of Population), is called a "Malthusian catastrophe".