title: Theory of population
text: # Theory of population
  
  Theory of population may refer to:
  
  * Malthusianism, a theory of population by Thomas Malthus (1766–1834)
     * An Essay on the Principle of Population, the book in which Malthus propounded his theory
  * Neo-Malthusian theory of Paul R. Ehrlich (born 1932) and others
  * Theory of demographic transition by Warren Thompson (1887–1973)
  