Sumner say it all in one sentence right here, advocating blind acceptance...:

In writing of evolution there is no purpose to investigate or criticize Darwinism relating to “man’s place in nature.”

What’s Good for the Goose. . . : Labor and the Theory of Evolution
http://historymatters.gmu.edu/d/4999

He goes on to say...

We take man’s place in nature as it stands to-day regardless of his creation. His remote ancestors may have been apes or tadpoles, or, he may have been created as the Bible proclaims. In any case there has been going forward in processes of evolution a steady unfolding of mental powers, whatever may be said of man’s early physical endowment.

and then launches into rationalizing class and labor, not all of which I disagree with, but he forgets to mention that throughout history the enormous wealth of any and all pharaohs, emperors, kings or plantation capitalists has been acquired not by the willing labor of fellow citizens but the forced labor of captured peoples and subjugated citizenry... eg; whoever yields the biggest stick, sheds the most blood without blinking, and threatens to shed more until full compliance is achieved. Though he mentions education he fails to mention that education (or real education) has often been denied to the working labor slave classes to keep them in subjection so I have to disagree, evolution of 'mind' has really not been taking place at all. Evolution of methods of subjection perhaps and evolution of how to rationalize it in the minds of those who cater to various methods of the acquisition of enormous wealth is all I see. He fails to mention the various methods used to keep subjected peoples in their lowly places, the stripping away of basic human rights and needs etc so really, often exactly the reverse can be shown to be true in regard to evolution of intellectual powers, how a dignified person can be made to behave like an animal... He should have had a paragraph or two about pecking orders in there.

Do you think, perhaps, the fact that humans practice pecking orders means we are evolved from chickens?