
Origine: Thus, whatever system of organs be studied, the comparison of their modifications in the ape series leads to one and the same result—that the structural differences which separate Man from the Gorilla and the Chimpanzee are not so great as those which separate the Gorilla from the lower apes. (da Evidence as to Man's Place in Nature, cap. 2, § 123 https://en.wikisource.org/wiki/Evidence_as_to_Man%27s_Place_in_Nature/Chapter_2#123)