Utterson reads Jekyll’s letter that details his early desires to separate the good and evil nature of man, and his experiments to create the formula that would eventually give birth to Hyde. Though at first Jekyll took joy in living as Hyde, he realized that the more he took the formula the likelier the possibility that he would remain as Hyde forever. After several spontaneous transformations, Jekyll decided to concoct one last dose of the formula to write his letter, not knowing whether Hyde would kill himself or be captured and hanged. Mr. Utterson the lawyer was a man of a rugged countenance . . . the last good influence in the lives of down-going men. See Important Quotations Explained My reason wavered, but it did not fail me utterly. I have more than once observed that in my second character, my faculties seemed sharpened to a point and my spirits more tensely elastic; thus it came about that, where Jekyll perhaps might have succumbed, Hyde rose to the importance of the moment. My drugs were in one of the presses of my cabinet; how was I to reach them? That was the problem that (crushing my temples in my hands) I set myself to solve. The laboratory door I had closed. If I sought to enter by the house, my own servants would consign me to the gallows. I saw I must employ another hand, and thought of Lanyon. How was he to be reached? how persuaded? Supposing that I escaped capture in the streets, how was I to make my way into his presence? and how should I, an unknown and displeasing visitor, prevail on the famous physician to rifle the study of his colleague, Dr. Jekyll? Then I remembered that of my original character, one part remained to me: I could write my own hand; and once I had conceived that kindling spark, the way that I must follow became lighted up from end to end. In the opening chapter, Stevenson overcomes this challenge by highlighting his characters’ inability to express and come to terms with the events that they have witnessed. “There is something wrong with [Hyde’s] appearance,” Enfield says. “I never saw a man I so disliked, and yet I scarce know why. He must be deformed somewhere; he gives a strong feeling of deformity, although I couldn’t specify the point.” In other words, Hyde’s ugliness is not physical but metaphysical; it attaches to his soul more than to his body. Enfield and, later, Utterson, whose minds are not suited to the metaphysical, can sense Hyde’s uncanniness but cannot describe it. Their limited imaginations fail them as they approach the eerie and inexplicable; as rational clashes with irrational, language breaks down. Read more about the theme of human nature in William Golding’s Lord of the Flies. The Temptation of Curiosity

The most obvious example of this theme is Jekyll’s desire and ability to create Hyde. In this scenario, Jekyll succumbs to two different temptations, one being a longing to act on his suppressed, morally-questionable thoughts and the other being his scientific curiosity. Both of these interests lead to his creation of Hyde, and although this development satisfies him for a time, Hyde ultimately becomes Jekyll’s fatal flaw. This outcome seems to suggest that while there are possibilities beyond the limited world-view that Victorian London embraces, pursuing those possibilities can be dangerous and destructive. The horrific outcome of Jekyll’s experiments reflects the era’s anxieties about the emergence of new forms of science and new ways of thinking. Small indeed was my appetite. This inexplicable incident, this reversal of my previous experience, seemed, like the Babylonian finger on the wall, to be spelling out the letters of my judgment; and I began to reflect more seriously than ever before on the issues and possibilities of my double existence. That part of me which I had the power of projecting, had lately been much exercised and nourished; it had seemed to me of late as though the body of Edward Hyde had grown in stature, as though (when I wore that form) I were conscious of a more generous tide of blood; and I began to spy a danger that, if this were much prolonged, the balance of my nature might be permanently overthrown, the power of voluntary change be forfeited, and the character of Edward Hyde become irrevocably mine. The power of the drug had not been always equally displayed. Once, very early in my career, it had totally failed me; since then I had been obliged on more than one occasion to double, and once, with infinite risk of death, to treble the amount; and these rare uncertainties had cast hitherto the sole shadow on my contentment. Now, however, and in the light of that morning's accident, I was led to remark that whereas, in the beginning, the difficulty had been to throw off the body of Jekyll, it had of late gradually but decidedly transferred itself to the other side. All things therefore seemed to point to this; that I was slowly losing hold of my original and better self, and becoming slowly incorporated with my second and worse. Dr. Jekyll and Mr. Hyde centers upon a conception of humanity as dual in nature, although the theme does not emerge fully until the last chapter, when the complete story of the Jekyll-Hyde relationship is revealed. Therefore, we confront the theory of a dual human nature explicitly only after having witnessed all of the events of the novel, including Hyde’s crimes and his ultimate eclipsing of Jekyll. The text not only posits the duality of human nature as its central theme but forces us to ponder the properties of this duality and to consider each of the novel’s episodes as we weigh various theories.A year later, the police summon Utterson after they discover a note with his name on it on the body of Sir Danvers Carew, a member of Parliament and client of Utterson that Hyde murdered. Utterson leads the police to Hyde’s apartment, and while he is nowhere to be found, they learn that Hyde has an account at a local bank. For weeks, the police expect Hyde to appear at the bank to withdraw money, but he never comes. Chapter 5 Did you ever remark that door?" he asked; and when his companion had replied in the affirmative, "It is connected in my mind," added he, "with a very odd story." Mr. Utterson again walked some way in silence and obviously under a weight of consideration. "You are sure he used a key?" he inquired at last. The next day, came the news that the murder had not been overlooked, that the guilt of Hyde was patent to the world, and that the victim was a man high in public estimation. It was not only a crime, it had been a tragic folly. I think I was glad to know it; I think I was glad to have my better impulses thus buttressed and guarded by the terrors of the scaffold. Jekyll was now my city of refuge; let but Hyde peep out an instant, and the hands of all men would be raised to take and slay him. He is not easy to describe. There is something wrong with his appearance; something displeasing, something down-right detestable. I never saw a man I so disliked, and yet I scarce know why. He must be deformed somewhere; he gives a strong feeling of deformity, although I couldn't specify the point. He's an extraordinary looking man, and yet I really can name nothing out of the way. No, sir; I can make no hand of it; I can't describe him. And it's not want of memory; for I declare I can see him this moment."

Yet if Hyde were just an animal, we would not expect him to take such delight in crime. Indeed, he seems to commit violent acts against innocents for no reason except the joy of it—something that no animal would do. He appears deliberately and happily immoral rather than amoral; he knows the moral law and basks in his breach of it. For an animalistic creature, furthermore, Hyde seems oddly at home in the urban landscape. All of these observations imply that perhaps civilization, too, has its dark side. I resolved in my future conduct to redeem the past; and I can say with honesty that my resolve was fruitful of some good. You know yourself how earnestly, in the last months of the last year, I laboured to relieve suffering; you know that much was done for others, and that the days passed quietly, almost happily for myself. Nor can I truly say that I wearied of this beneficent and innocent life; I think instead that I daily enjoyed it more completely; but I was still cursed with my duality of purpose; and as the first edge of my penitence wore off, the lower side of me, so long indulged, so recently chained down, began to growl for licence. Not that I dreamed of resuscitating Hyde; the bare idea of that would startle me to frenzy: no, it was in my own person that I was once more tempted to trifle with my conscience; and it was as an ordinary secret sinner that I at last fell before the assaults of temptation. I think you might have warned me," returned the other with a touch of sullenness. "But I have been pedantically exact, as you call it. The fellow had a key; and what's more, he has it still. I saw him use it not a week ago." Yes, I preferred the elderly and discontented doctor, surrounded by friends and cherishing honest hopes; and bade a resolute farewell to the liberty, the comparative youth, the light step, leaping impulses and secret pleasures, that I had enjoyed in the disguise of Hyde. I made this choice perhaps with some unconscious reservation, for I neither gave up the house in Soho, nor destroyed the clothes of Edward Hyde, which still lay ready in my cabinet. For two months, however, I was true to my determination; for two months, I led a life of such severity as I had never before attained to, and enjoyed the compensations of an approving conscience. But time began at last to obliterate the freshness of my alarm; the praises of conscience began to grow into a thing of course; I began to be tortured with throes and longings, as of Hyde struggling after freedom; and at last, in an hour of moral weakness, I once again compounded and swallowed the transforming draught.During a party thrown by Jekyll, Utterson confronts him about Hyde, but Jekyll brushes Utterson’s concerns off and tells him to promise to carry out the will as it is. From this he was recalled by Mr. Utterson asking rather suddenly: "And you don't know if the drawer of the cheque lives there?" Time ran on; thousands of pounds were offered in reward, for the death of Sir Danvers was resented as a public injury; but Mr. Hyde had disappeared out of the ken of the police as though he had never existed. Much of his past was unearthed, indeed, and all disreputable: tales came out of the man's cruelty, at once so callous and violent; of his vile life, of his strange associates, of the hatred that seemed to have surrounded his career; but of his present whereabouts, not a whisper. From the time he had left the house in Soho on the morning of the murder, he was simply blotted out; and gradually, as time drew on, Mr. Utterson began to recover from the hotness of his alarm, and to grow more at quiet with himself. The death of Sir Danvers was, to his way of thinking, more than paid for by the disappearance of Mr. Hyde. Now that that evil influence had been withdrawn, a new life began for Dr. Jekyll. He came out of his seclusion, renewed relations with his friends, became once more their familiar guest and entertainer; and whilst he had always been known for charities, he was now no less distinguished for religion. He was busy, he was much in the open air, he did good; his face seemed to open and brighten, as if with an inward consciousness of service; and for more than two months, the doctor was at peace. Perhaps the angel gives way permanently to Jekyll’s devil. Or perhaps Jekyll is simply mistaken: man is not “truly two” but is first and foremost the primitive creature embodied in Hyde, brought under tentative control by civilization, law, and conscience. According to this theory, the potion simply strips away the civilized veneer, exposing man’s essential nature. Certainly, the novel goes out of its way to paint Hyde as animalistic—he is hairy and ugly; he conducts himself according to instinct rather than reason; Utterson describes him as a “troglodyte,” or primitive creature.