Charles Darwin (1809–1882) British naturalist, author of "On the origin of species, by means of natural selection"
There is one thinking sensible principle, intimately allied to one kind of organic matter—have & which thinking principle seems to be given a assumed according to a more extended relations of the individuals, whereby choice with memory or reason? is necessary—which is modified into endless forms bearing a close relation in degree & kind to the endless forms of the living beings. <br class="br">" Notebook C http://darwin-online.org.uk/EditorialIntroductions/vanWyhe_notebooks.html" (1838) page 210e http://darwin-online.org.uk/content/frameset?pageseq=186&itemID=CUL-DAR122.-&viewtype=side <br class="br">quoted in [Creativity, Psychology and the History of Science, 2005, Howard E., Gruber, Katja, Bödeker, Springer, 9781402034916, 142, http://books.google.com/books?id=MDbruQKIu-wC&pg=PA142] <br class="br">also quoted in [The Cambridge Companion to Darwin, 2003, Robert J., Richards, Darwin on mind, morals, and emotions, Johnathan, Hodge, Gregory, Radick, Cambridge University Press, 9780521777308, 95-96, http://books.google.com/books?id=uj_by_Sg3LkC&pg=PA95] <br class="br">Other letters, notebooks, journal articles, recollected statements