The Duke himself was frightened by the frightened look of Caroline. "Come, in whom are you disappointed?" he said, resuming the mask of his tranquil smile. "What is that you have got into your head now? Do you not see that I worship my brother, that I am in great fear of losing him, and that, because of the assistance you were to him last night, I speak to you as if you were my sister? I am very much embarrassed; I lose my senses, do you see? Urbain is killing himself with work. My influence over him is not sufficient; he does not want me to inform our mother of the return of his old disorder. Informing her would be indeed to agitate her dangerously; infirm as she is, she would be always with him to watch. At the end of two nights she would succumb to her exertions. It remains for us two, therefore, to save my brother, without seeming to do so, without taking the lackeys and chambermaids into our confidence. That sort of people will always talk. Come, are you a woman of heart and head as I have persuaded myself that you are? Will you, can you, dare you, seriously, aid me to nurse him in secret, and watch alternately with me for several evenings, several nights if necessary, never leaving him alone an hour, so that even for an hour he cannot betake himself again to his accursed old books! He needs nothing, I feel sure, but absolute repose of mind, sufficient sleep, a little walking, and that he should try to eat. To bring these things about, it requires the despotic authority--yes, the despotic authority of some one who is not afraid to go counter to his will--of some devoted heart not easily moved or harshly immovable, or unseasonably distrustful,--some one who will bear with his whims if he should have any, and with the impulsive excesses of his gratitude if such should escape him,--a serious friend, in a word, who shall have such delicate, intelligent charity for him as will make him accept and perhaps love his yoke. Well, now, Caroline, you are the only one here who can be that person. My brother has great esteem, profound respect, and, I believe, even a sincere friendship for you. Try to govern him a week, a fortnight, a month perhaps, for if he could get up to-day he would be here this evening turning over the leaves of his books and taking notes; if he sleeps again to-night he will believe himself through with the whole thing, and will not go to bed at all the next night. You see what task we ought to impose upon ourselves. As for my part, I am resolved upon it, entirely devoted to it, but by myself alone I can do nothing. I shall weary him, he will allow no one but me to see him, and his impatience will neutralize the effect of my care. With you,--a woman, a voluntary guardian, generous, firm and tender, patient and resolute, as women only know how to be,--I will answer for it that he will submit without ill-will, and later, when all the paroxysms of his disorder are passed, he will bless you for having thwarted him."