Margaret Kennedy said this quote

He became so gloomy that she asked him, at last, if he was worried about anything. He assured her, instantly, that he was the happiest man in the world. And he was. At times he was almost bewildered by his own bliss in being there, with Tony, so terribly dear, beside him; really his own for the rest of his life. It was not her fault if the insatiable sorrows of an unequal love tormented him, the hungry demand for more, for a fuller return, for a feeling which it was not in her nature to give. As she leaned forward, absorbed in the passions staged beneath her, he felt suddenly that their box contained just himself and a wraith, a ghost; as if the real Antonia, whom he loved, was an imagined woman living only in his sad fancy.