"'There you have the whole truth of it. You can hang me, or do what you like with me, but you cannot punish me as I have been punished already. I cannot shut my eyes but I see those two faces staring at me--staring at me as they stared when my boat broke through the haze. I killed them quick, but they are killing me slow; and if I have another night of it I shall be either mad or dead before morning. You won't put me alone into a cell, sir? For pity's sake don't, and may you be treated in your day of agony as you treat me now.' "What is the meaning of it, Watson?" said Holmes solemnly as he laid down the paper. "What object is served by this circle of misery and violence and fear? It must tend to some end, or else our universe is ruled by chance, which is unthinkable. But what end? There is the great standing perennial problem to which human reason is as far from an answer as ever."