The real value of the book is his illumination of the missing parts of both traditions, which, interestingly, have to do with the artificial separation of economics and politics into separate realms ...

A systemic problem with Categorical Thinking.  Elements outside a Category are judged further apart than elements within a Category thus the affective influence of "politics" on "economics," and visa versa to be sure, are down rated.

She believed in nothing; only her skepticism kept her from being an atheist. -- Jean-Paul Sartre