It was an ugly necessity, certainly; Walter frankly recognized that fact from the very beginning, and he shrank even from contemplating it; but there was no other way out of the difficulty. The old man had always been a selfish bachelor, with no love for anybody or anything on earth except his books, his coins, his garden, and his dinner; he was growing tired of all except the last; would it not be better for the world at large, on strict utilitarian principles, that he should go at once? True, such steps are usually to be deprecated; but the wise man is a law unto himself, and instead of laying down the wooden, hard-and-fast lines that make conventional morality so much a rule of thumb, he judges every individual case on its own particular merits. Here was Christina's happiness and his own on the one hand, with many collateral advantages to other people, set in the scale against the feeble remnant of a selfish old man's days on the other. Walter Dene had a constitutional horror of taking life in any form, and especially of shedding blood; but he flattered himself that if anything of the sort became clearly necessary, he was not the man to shrink from taking the needful measures to ensure it, at any sacrifice of personal comfort. All through the next week Walter turned over the subject in his own mind; and the more he thought about it, the more the plan gained in definiteness and consistency as detail after detail suggested itself to him. First he thought of poison. That was the cleanest and neatest way of managing the thing, he considered; and it involved the least unpleasant consequences. To stick a knife or shoot a bullet into any sentient creature was a horrid and revolting act; to put a little tasteless powder into a cup of coffee and let a man sleep off his life quietly was really nothing more than helping him involuntarily to a delightful euthanasia. "I wish any one would do as much for me at his age, without telling me about it," Walter said to himself seriously. But then the chances of detection would be much increased by using poison, and Walter felt it an imperative duty to do nothing which would expose Christina to the shock of a discovery. She would not see the matter in the same practical light as he did; women never do; their morality is purely conventional and a wise man will do nothing on earth to shake it. You cannot buy poison without the risk of exciting question. There remained, then, only shooting or stabbing. But shooting makes an awkward noise, and attracts attention at the moment; so the one thing possible was a knife, unpleasant as that conclusion seemed to all his more delicate feelings.