"The Two Laws of Eden" (second page): "Neither was he a worm, nor a snake; he was the most intelligent creature of all the animal kingdom; and he carried on a vocal conversation with Eve. He was a servant creature; endowed with that ability."
Gen 4:26 ("then began men to call upon the name of the Lord") seems to be a counterexample. At the same time, Gen 6:1–7 does draw a distinction between the "sons of God" and the "daughters of men", and Gen 6:5 refers to the "wickedness of man".