"My ward," continued Mr. Dowsett, laying his hand affectionately on Carton's shoulder, "has also an odd idea in reference to this dreadful affair, that something significant and pregnant will be discovered in an odd and unaccountable fashion. Heaven knows, I don't want to deprive him of any consolation he can derive from his imaginings. I have too sincere a love for him; but I am a man of the world, and it grieves me to see him indulge in fancies which can lead to no good result. To tell you the honest truth," Mr. Dowsett whispered to me, "I am afraid to let him out of my sight for fear he should do violence to himself." "My dear guardian," said Carton, "who should know better than I how kind and good you are to me? Who should be better able to appreciate the tenderness and consideration I have always received at your hands? I may be wilful, headstrong, but I am not ungrateful. Indeed, sir"--turning to me--"I am wild with grief and despair, and my guardian has the best of reasons for chiding me. He has only my good at heart, and I am truly sorry to distress him; but I have my ideas--call them fancies if you like--and I must have something to cling to. I will not abandon my pursuit till the murderer is brought to justice, or till I kill him with my own hands!" "That is how he has been going on," said Mr. Dowsett, "all day yesterday, and the whole live-long night. He hasn't had a moment's sleep." "Sleep!" cried Carton. "Who could sleep under such agony as I am suffering?" "But," I said to the young man, whose intense earnestness deepened my sympathy for him, "sleep is necessary. It isn't possible to work without it. There are limits to human strength, and if you wish to be of any service in the clearing up of this mystery, you must conduct yourself with some kind of human wisdom." "There, my dear lad," said Mr. Dowsett, "doesn't that tally with my advice? I tried to prevail upon him last night to take an opiate----" "And I wouldn't," interrupted Carton, "and I said I would never forgive you if you administered it to me without my knowledge. Never, never will I take another!" Mr. Dowsett looked at him reproachfully, and the young man added, "There--I beg your pardon. I did not mean to refer to it again." "If I have erred at all in my behaviour towards you, my dear lad, it is on the side of indulgence. Still," said Mr. Dowsett, addressing me, "that does not mean that I shall give up endeavouring to persuade George to do what is sensible. As matters stand, who is the better judge, he or I? Just look at the state he is in now, and tell me whether he is fit to be trusted alone. My fear is that he will break down entirely." "I agree with your guardian," I said to Carton; "he is your best adviser."