I very much enjoyed reading this book. It refers to many important and well-known Greek characters; one more, Procrustes, isn't mentioned by name, but makes an appearance in the form of the author himself, who nips and tucks Greek history of the 10th to 4th centuries BCE into the bed of his theory. Following the Marxian example, this theory projects the course of history onto the one-dimensional aspect of modes of commodities exchange, of which four are distinguished; A - reciprocity of gift and obligatory counter-gift, B - taking by force, C - money economy, and D - which remains mysterious, being negatively defined as none of the above, transcending them, but somewhat resembling A. These are associated with socio-political forms, viz. A - clan society, B - ruler/ruled (feudal) relationship, C - democracy (here used worryingly synonymously with 'tyranny of the majority'), and D - the eponymous isonomia.
The author names three examples of societies that in his view realised isonomia; the Ionian colonies before the Lydian/Persian conquest, the colony of Iceland before the Danish conquest, and the New England colonies before the War of Independence. While the concrete form isonomia would take remains obscure, these examples illustrate that it requires a highly mobile, uprooted population, presupposes the availability of practically limitless expansion space (quite possibly at the expense of an indigenous population), and is likely to succumb to external force or inner contingencies. Nevertheless, for some reason the author appears to see in it a higher, future form of human society.
The proposed socio-political history model did not fully convince me, but the book offers a very interesting view on the history of philosophy. It gives a compelling argument for a uniquely Pythagorean root of Plato's theory of ideas, setting these two philosophers' notion of a duality of worlds - one of ideas, one of sensory illusions - against the unity of the world in Ionian philosophy down to the sophists, and assigns the Eleatics a sensible role in the process. Although a critical reassessment of the Platonist account of the development of Greek philosophy isn't all that novel (and was e.g. already popularised in Pirsig's 1974 novel 'Zen and the art of motorcycle maintenance'), the present book presents a clear and convincing narrative with some delightful insights, which make it very worthwhile reading.