That an easy rapport if not a great passion developed between Cleopatra and Caesar was unsurprising. Her aplomb and his gamble may have clinched the deal, but their personalities were as neatly matched as their political agendas. They were congenial, charismatic, quick-tongued people, if only one of them would go down in history as having been so seductive as to be dangerous. Cleopatra especially knew how to ingratiate. Where there had been thought to be four kinds of flattery, Plutarch sputtered, always on guard against that noxious brew, “she had a thousand.” We have more tributes to the...