Bernadete, Seth, The Rhetoric of Morality and Philosophy: Plato's Gorgias and Phaedrus, Chicago: University of Chicago Press, 2009.

Excerpt:

To put side by side an interpretation of one Platonic dialogue with that of another does not make a book; but although Gorgias and Phaedrus are not as matched a pair as Sophist and Statesman are, something can still be said for putting them together. If Socrates in the Gorgias were primarily concerned with justice and morality, the Republic and not the Phaedrus would form a more natural couple with it. An idealistic Socrates and a Socrates fighting mad do go together (Republic 536c4), while a lovesick Socrates hardly suits the killjoy of the Gorgias. The antihedonism of Socrates, however, is not as strict as it seems (Gorgias 458a2-5); and Socrates in the Gorgias is not out to defend morality but to understand “so-called rhetoric.”

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