Thus, liberalism and Marxism share a concern with the private, economic aspects of life and culture.Isn't an emphasis on the private and the social somewhat contradictory? Same goes for society and the economy.They both understand and analyze politics in terms of society and the economy.
We're reading upside down, of course, but still ... you can hear the Truth ringing throughout.
Even if it's just telltale "turn of phrase" thing.
(That's one reason it was important to link the Sources which produce such strange fruit.)
For clarity's sake:
--- ** "The Combined Effect of Proletariat and Banker will be Formidable"** -- (Belloc, 1924)