"I am not afraid," he rejoined simply. "But I must look at possibilities. Yes, dear," he continued more forcibly, "it is possible that this story is true. No good saying that it is impossible: improbable if you like, but not impossible. Look at it how you like, you must admit that it is not impossible. Uncle Arthur may have married in Martinique; he was out there in 1881; he may have had a son; his telling no one about his marriage is not to be wondered at; he was always reticent and queer about his own affairs. This Philip may possibly be Uncle Rad's sole and rightful heir, and I may possibly be a beggar." She uttered an exclamation of incredulity. Luke, a beggar! Luke the one man in all the world, different from every other man! Luke ousted by that stranger upstart! God hath too much sense of humour to allow so ridiculous a Fate to work her silly caprice. "And," she said with scorn, "because of all these absurd possibilities you talk of breaking off your engagement to me. Do you care so little as all that, Luke?" He did not reply, but continued to walk beside her, just a yard or so apart from her, turning his steps in the direction of the gates, toward the Albert Bridge, their nearest way home. She--meekly now, for already she was sorry--turned to look at him. Something in his attitude, the stoop of the shoulders, usually so square and erect, the hands curiously clasped behind his back, told her that her shaft--very thoughtlessly aimed--had struck even deeper than it should. "I am so sorry, dear," she said gently. His look forgave her, even before the words were fully out of her mouth, but with characteristic reticence, he made no reply to her taunt. Strangely enough she was satisfied that he should say nothing. The look, which did not reproach even whilst it tried to conceal the infinite depth of the wound so lightly dealt, had told her more than any words could do. Whatever Luke decided to do, it would be from a sense of moral obligation, that desire for doing the right thing--in the worldly sense of the term--which is inherent in Englishmen of a certain class. No sentiment save that of a conventional one of honour would be allowed to sway her destiny and his. Conventionality--that same strained sense of honour and duty--decreed that under certain mundane circumstances a man and woman should not mate. Differences of ancestry, of parentage, of birth and of country, divergence of taste, of faith, of belief--all these matter not one jot. But let the man be beggared and the woman rich, and convention steps in and says, "It shall not be!"