The First Philosophers: Studies in Ancient Greek Society, Vol. II

Classical Marxist approach to the Pre-Socratic and ancient Chinese philosophers which argues that philosophy is a reflection of the value form.

From Sohn-Rethel's Preface to Intellectual and Manual Labor: A Critique of Epistemology:

"Professor George Thomson, [is] the only other man I have known who had also recognised the interconnection of philosophy and money, although in a completely different field from my own – in ancient Greece."