Early in his confinement the conviction took root in him that he was going mad. It was as though there were a quantity of dark yet vivid personalities in his mind, some of them familiar, some of them strange and terrible, held in check by a little monitor, who sat aloft somewhere and looked on. The thing that worried him was that the monitor was sick, and holding out with difficulty. Should he give up, should he falter for a moment, out would rush these intolerable things--only Anthony could know what a state of blackness there would be if the worst of him could roam his consciousness unchecked.