Cryptogram from Frankenstein; or, the modern prometheus, chapter 24

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"I thank you, Walton," he said, "for your kind intentions towards so miserable a wretch; but when you speak of new ties and fresh affections, think you that any can replace those who are gone? Can any man be to me as Clerval was, or any woman another Elizabeth? Even where the affections are not strongly moved by any superior excellence, the companions of our childhood always possess a certain power over our minds which hardly any later friend can obtain. They know our infantine dispositions, which, however they may be afterwards modified, are never eradicated; and they can judge of our actions with more certain conclusions as to the integrity of our motives. A sister or a brother can never, unless indeed such symptoms have been shown early, suspect the other of fraud or false dealing, when another friend, however strongly he may be attached, may, in spite of himself, be contemplated with suspicion. But I enjoyed friends, dear not only through habit and association, but from their own merits; and wherever I am, the soothing voice of my Elizabeth and the conversation of Clerval will be ever whispered in my ear. They are dead, and but one feeling in such a solitude can persuade me to preserve my life. If I were engaged in any high undertaking or design, fraught with extensive utility to my fellow creatures, then could I live to fulfil it. But such is not my destiny; I must pursue and destroy the being to whom I gave existence; then my lot on earth will be fulfilled and I may die."