I agree with janines. I think Clive sees Shackleford is “more peculiar than most”, because he held views that appear, at least on the surface to be in conflict with each other and he believed in the “ inherent nobility of the Aryan race”. He believed slavery was evil both morally and rationally, he employed Black people in jobs others would not, he worked alongside Blacks as a youth and yet he was a white supremacist. Clive makes it a point to say “Shackleford was not a hateful man”, and yet he believed Black and White people were “utterly alien to one another”. Clive finds all Americans to have “ peculiar” notions about Black people and yet, he finds Shackleford’s insistence of inherent White superiority dumbfounding when examples of ingenuity such as the pyramids of Egypt are put forth. It’s as if there is some type of rot deep within Shackleford. Interestingly, when Clive notes he doesn’t know how to respond to Shackleford - he shifts his gaze to a “ rotten cabbage”.