" Yes, of course it is a sad emotion when it is not shared by the person inspiring it; but where is happiness to be found if not in mutual love? Cordial friendship, gentle trust—the only trust which knows no limits—sorrows soothed and pleasure enhanced, the charm of hope and of remembrance: where else can you find all these but in love? "

― Pierre Choderlos de Laclos , Les Liaisons dangereuses