Thomas Malthus, Charles Darwin, Alfred Wallace By 13slywcli Period: Feb 14, 1766 to Dec 29, 1834 Thomas Malthus May 20, 1798 Thomas Malthus writes the Malthusian Doctrine May 20, 1803 Second edition of 'Principles of Population' is published Apr 12, 1804 Thomas Malthus marries Sep 11, 1805 Malthus becomes a teacher Period: Feb 12, 1809 to Apr 19, 1882 Charles Darwin May 20, 1815 'An Inquiry into the Nature and Progress of Rent' is published by Malthus Aug 22, 1820 'Principles of Political Economy' is published by Malthus Period: Jan 8, 1823 to Nov 1, 1913 Alfred Wallace Dec 27, 1831 The Beagle departs for its journey Jan 29, 1839 Charles Darwin marries Apr 26, 1848 Wallace departed for Brazil with Henry Bates Aug 21, 1854 Wallace leaves for Indonesia Feb 20, 1855 Wallace writes the Sarawak Paper May 1, 1856 The Origin of Species beginings May 20, 1862 Charles Darwin and Alfred Wallace meet Nov 20, 1864 Darwin is awarded the Copley medal Apr 23, 1866 Alfred Wallace marries