The Beautiful and the Damned, The Original Novel

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.
The heat of the day had changed, somehow, until it was a burnished darkness crushing down upon a devastated land. Over his head the blue circles of ominous uncharted suns, of unnumbered centres of fire, revolved interminably before his eyes as though he were lying constantly exposed to the hot light and in a state of feverish coma. At seven in the morning something phantasmal, something almost absurdly unreal that he knew was his mortal body, went out with seven other prisoners and two guards to work on the camp roads. One day they loaded and unloaded quantities of gravel, spread it, raked it—the next day they worked with huge barrels of red-hot tar, flooding the gravel with black, shining pools of molten heat. At night, locked up in the guard-house, he would lie without thought, without courage to compass thought, staring at the irregular beams of the ceiling overhead until about three o'clock, when he would slip into a broken, troubled sleep.