„We know that this animal [the giraffe], the tallest of mammals, dwells in the interior of Africa, in places where the soil, almost always arid and without herbage, obliges it to browse on trees and to strain itself continuously to reach them. This habit sustained for long, has had the result in all members of its race that the forelegs have grown longer than the hind legs and that its neck has become so stretched, that the giraffe, without standing on its hind legs, lifts its head to a height of six meters.“
— Jean-Baptiste Lamarck
Philosophie Zoologique, Vol. I (1809), pp. 256–257; translation taken from The Classics of Science: A Study of Twelve Enduring Scientific Works (1984) by Derek Gjertsen, p. 316.