I have been studying the traits and dispositions of the “lower animals” (so-called), and contrasting them with the traits and dispositions of man. I find the results humiliating to me. For it obliges me to renounce my allegiance to the Darwinian theory of the Ascent of Man from the Lower Animals; since it now seems plain to me that that theory ought to be vacated in favor of a new and truer one, this new and truer one to be named the Descent of Man from the Higher Animals.
In proceeding toward this unpleasant conclusion I have not guessed or speculated or conjectured, but have used what is commonly called the scientific method. That is to say, I have subjected every postulate that presented itself to the crucial test of actual experiment, and have adopted it or rejected it according to the result.