He was more than proud; he was grateful.  The development that had changed Dorothea from a forward little girl into a charming maiden, and which might have been the mere consequence of growth, was to him the evident fruit of Diane’s influence.  The subtle differences whereby his own dwelling was transformed from a handsome, more or less empty, shell into an abode of the domestic amenities sprang, in his opinion, from a presence shedding grace.  All the more strange was it, therefore, that both presence and influence remained as remote from his own personal grasp as music on the waves of sound or odors in the air.  Of the many impressions produced by a year of Diane’s residence beneath his roof, none perplexed him more than her detachment.  Moreover, it was a detachment as difficult to comprehend in quality as to define in words.  There was in her attitude nothing of the retreating nymph or of the self-effacing sufferer.  She took her place equally without obtrusiveness and without affectation.  Such effects as she brought about came without noise, without effort, and without laboriousness of good intention.  Simple and straightforward in all her ways, she nevertheless contrived to throw into her relations with himself an element as impersonal as sunshine.

In the first days of her coming it was he who, in pursuance of his method of reserve, had held aloof.  He had been frequently absent from New York, and, even when there, had lived much at one or another of his clubs.  Weeks had already passed when the perception stole on him that his goings and comings meant little more to her than to the trees waving in the great Park before his door.

The discovery that he had been taking such pains to abstract himself from eyes which scarcely noticed whether he was there or not brought with it a little bitter raillery at his own expense.  He was piqued at once in his self-love and in his masculine instinct for domination.  It seemed to be out of the natural order of things that his thoughts should dwell so much on a woman to whom he was only a detail in the scheme of her surroundings—­superior to the butler, and more animate than the pictures on the wall, but as little in her consciousness as either.  It was certainly an easy opportunity in which to display that self-restraint which he had undertaken to make his portion; but when the heroic nature finds no obstacles to overcome, it has a tendency to create them.

Without obtruding himself upon Diane, Derek began to dine more frequently at his own house.  On those occasions when Dorothea went out alone it was impossible for the two who remained at home to avoid a kind of conversation, which, with the topics incidental to the management of a common household, often verged upon the intimate.  When Diane accompanied his daughter to the opera, he adopted the habit of dropping into the box, and perhaps taking them, with some of Dorothea’s friends, to a restaurant for supper.  He planned the little parties and excursions for which Dorothea’s “budding” offered an excuse; and, while he recognized the subterfuge, he made his probable journey, with the long absence it would involve, serve as a palliation.  Since, too, there was no danger to Diane, there could be the less reason for stinting himself in the pleasure of her presence, so long as he was prepared to pay for it afterward in full.