the leech

The leech is the epithet for Roger Chillingworth, the physician who systematically torments Arthur Dimmesdale under the guise of medical care, embodying the novel's exploration of revenge, hidden sin, and moral corruption. The term, drawn from the archaic word for a doctor, becomes a bitterly ironic label for a man who transforms from a learned scholar into a fiendish avenger, his medical role serving as a mask for a far more sinister purpose.

Identity and Introduction

Roger Chillingworth, the man who becomes known as the leech, is introduced as a stranger in the crowd witnessing Hester Prynne's public shaming. He is described as small in stature, with a furrowed visage and a remarkable intelligence, and a slight deformity—one shoulder higher than the other. He presents himself as a physician, a man of skill in both Christian medicine and the herbal knowledge of the savage people, having learned many secrets in the wilderness. His arrival in Boston is marked by mystery; he seems to drop down as it were out of the sky, and a rumor spreads that Heaven had transported him from a German university to the door of Mr. Dimmesdale's study. He is lodged in the prison not as a suspect but as a convenient arrangement until his ransom can be settled with the Indian sagamores, and his name is announced as Roger Chillingworth.

The Leech's Role and Method

Chillingworth's primary role as the leech is to become the medical adviser and intimate companion of the Reverend Arthur Dimmesdale. He expresses great alarm at the minister's failing health and, after being urged by the elders and deacons, is accepted as his physician. The two men come to spend much time together, taking long walks on the sea-shore or in the forest, and eventually lodging in the same house, so that every ebb and flow of the minister's life-tide might pass under the physician's eye. Chillingworth's method is one of relentless psychological probing. He strives to go deep into his patient's bosom, delving among his principles, prying into his recollections, and probing everything with a cautious touch, like a treasure-seeker in a dark cavern. He possesses the power to bring his mind into such affinity with his patient's that the latter unawares speaks what he imagines himself only to have thought. The leech's investigation is described as a terrible fascination, a kind of fierce, though still calm, necessity that seizes him and never sets him free again. He digs into the poor clergyman's heart like a miner searching for gold, or like a sexton delving into a grave in quest of a jewel.

The Transformation and Revelation

The leech's pursuit of revenge causes a profound transformation in his own appearance. While his initial expression had been calm, meditative, and scholar-like, it becomes ugly and evil, with a glare of red light out of his eyes as if the old man's soul were on fire. The people of Boston come to believe that the Rev. Arthur Dimmesdale is haunted by Satan himself in the guise of old Roger Chillingworth. The climax of the leech's work occurs when he finds the minister asleep and, without any extraordinary precaution, thrusts aside the vestment that had always covered the minister's bosom. He beholds what he sought, and his reaction is a wild look of wonder, joy, and horror—a ghastly rapture too mighty to be expressed only by the eye and features, bursting forth through the whole ugliness of his figure. After this discovery, the leech's role shifts from investigator to tormentor. He becomes not a spectator only but a chief actor in the poor minister's interior world, able to play upon him as he chooses, arousing him with a throb of agony or startling him with sudden fear.

Consequences and End

Chillingworth's identity as the leech is ultimately revealed to Dimmesdale by Hester Prynne in the forest. The minister, upon learning that his trusted physician is his secret enemy, is horrified, but he also forgives Hester, declaring that the old man's revenge has been blacker than his own sin. In the final scaffold scene, Chillingworth attempts to stop Dimmesdale from confessing, crying out that he can still save him, but the minister rejects him, saying, "Thy power is not what it was! With God's help, I shall escape thee now!" After Dimmesdale's death, the leech's purpose is gone. All his strength and energy desert him, and he withers up, shrivels away, and almost vanishes from mortal sight, like an uprooted weed that lies wilting in the sun. He dies within the year, bequeathing a considerable amount of property to Pearl, the daughter of Hester Prynne. The narrative suggests that in the spiritual world, the old physician and the minister may have found their earthly stock of hatred and antipathy transmuted into golden love.