" This matter of being able to establish Barbara’s whereabouts for a specific number of hours brought at least limited relief from agonies of ignorance as to what her movements might be, with consequent inability to exercise control over her in however slight a degree; for love of that sort—the sort where the sensual element has been reduced to a minimum—must after all, largely if not entirely, resolve itself to the exercise of power: a fact of which Barbara was, of course, more aware than I. "

― Anthony Powell , A Buyer's Market (A Dance to the Music of Time #2)