- Jean-Baptiste Lamarck (1744-1829) Do we not therefore perceive that by the action of the laws of organization . . . nature has in favorable times, places, and climates multiplied her first germs of animality, given place to developments of their organizations, . . . and increased and diversified their organs Then. . . aided by much time and by a slow but constant diversity of circumstances, she ...www.ucmp.berkeley.edu/history/lamarck.html