Like Darwin, it was Wallace's consideration of how the ideas of Malthus might apply to animal populations that led him to conclusions very similar to those reached by Darwin about the role of natural selection.
Wallace je poput Darwin razmatrao moguću primjenu Malthusovih ideja na životinjske populacije koje su ga dovele do zaključka vrlo sličnima idejama koje je Darwin dokučio o ulozi prirodne selekcije.