There was no difficulty in accounting for his readiness to sacrifice himself in the interests of Oscar's tranquillity. He never did things by halves--he liked dashing at difficulties which would have made other men pause. The same zeal in his brother's service which had saved Oscar's life at the Trial, might well be the zeal that animated him now. The perplexity that I felt was not roused in me by the course that he had taken--but by the language in which he justified himself, and, more still, by his behavior to me while he was speaking. The well-bred brilliant young fellow of my previous experience, had now turned as dogged and as ungracious as a man could be. He waited to hear what I had to say to him next, with a hard defiance and desperation of manner entirely uncalled for by the circumstances, and entirely out of harmony with his character, so far as I had observed it. That there was something lurking under the surface, some inner motive at work in him which he was concealing from his brother and concealing from me, was as plainly visible as the sunshine and shade on the view that I was looking at from the summer-house. But what that something was, or what that inner motive might be, it baffled my utmost sagacity to guess. Not the faintest idea of the terrible secret that he was hiding from me, crossed my mind.
Innocent of all suspicion of the truth, there I sat opposite to him, the unconscious witness of that unhappy man's final struggle to be true to the brother whom he loved, and to master the devouring passion that consumed him. So long as Lucilla falsely believed him to be disfigured by the drug, so long the commonest consideration for her tranquillity would, in the estimation of others, excuse and explain his keeping out of her presence. In that separation, lay his last chance of raising an insurmountable barrier between Lucilla and himself. He had already tried uselessly to place another obstacle in the way--he had vainly attempted to hasten the marriage which would have made Lucilla sacred to him as his brother's wife. That effort having failed, there was but one honorable alternative left to him--to keep out of her society, until she was married to Oscar. He had accepted the position in which Oscar had placed him, as the one means of reaching the end in view without exciting suspicion of the truth--and he had encountered, as his reward for the sacrifice, my ignorant protest, my stupid opposition, set as obstacles in his way! There were the motives--the pure, the noble motives--which animated him, as I know them now. There is the right reading of the dogged language that mystified me, of the defiant manner that offended me; interpreted by the one light that I have to guide my pen--the light of later events!