The classical Greeks were really nothing like us — at least that now seems the prevailing dogma of classical scholars of the last half-century. Perhaps due to the rise of cultural anthropology or, more recently, to a variety of postmodern schools of social construction, it is now often accepted that the lives of Socrates, Euripides, and Pericles were not similar to our own, but so far different as to be almost unfathomable. Shelley’s truism that “We are all Greeks” has now become, as we say, “inoperative.” M. I. Finley, the great historian of the ancient economy, spent a lifetime to...