Cambridge History of Greek and Roman Political Thought

Vicky Roupa draws my attention to the new Cambridge History of Greek and Roman Political Thought.
The introduction may be downloaded free of charge.
Vicky has an inspection copy and draws attention to the chapter on Herodotus, Thucydides and the sophists, in particularProtagoras, who is quoted this: "It is just for the poor and the demos there to have more than the well-born and wealthy because it is the common people who man the ships and confer power on the city -helmsmen, signalmen, captains, look-out men, and shipwrights - these are the ones who confer power on the city [...]. Since this is so, it seems just to allow everyone access to political office [...]".