Essay · Literature & Culture

Lady Macbeth Cannot Make Macbeth Ambitious

Influence, desire, and responsibility in Shakespeare’s tragedy

The claim that Lady Macbeth “makes” Macbeth ambitious is attractive because it gives the tragedy a simple explanation. Macbeth begins as an honourable soldier, the argument goes, and his wife supplies the corruption. She reads his letter, recognizes an opportunity, attacks his hesitation, and helps organize Duncan’s murder. Once the deed is done, however, Macbeth becomes increasingly violent without her direction. The play therefore asks us to distinguish between causing a desire and exploiting one.

Lady Macbeth is not a minor influence. She is strategically intelligent, rhetorically forceful, and willing to imagine violence before Macbeth is willing to perform it. She understands that his ambition has encountered a moral obstacle, and she searches for the pressure most likely to make him cross it. Her appeal to masculinity is especially effective because it converts a political decision into a test of personal identity. She does not simply say, “Kill Duncan.” She makes refusal appear shameful.

But persuasion depends on material that already exists in the person being persuaded. Lady Macbeth can interpret Macbeth’s character, challenge his delay, and provide a plan. She cannot invent the crown as an object of desire, and she cannot make Duncan’s death seem useful to a man who has no interest in becoming king. Macbeth arrives at the murder with ambition, imagination, knowledge, and fear. Lady Macbeth supplies acceleration. Macbeth supplies direction.

The Weird Sisters occupy a parallel position. They do not command Macbeth to murder Duncan; they offer a possibility—“king hereafter”—and allow Macbeth’s imagination to supply the means (Shakespeare 1.3). The witches and Lady Macbeth therefore function as different kinds of catalyst. The witches awaken a future Macbeth wants to believe in, while Lady Macbeth pressures him to act on it. Both forces matter, but neither can enter his mind and choose for him. Macbeth makes their suggestions powerful by accepting them as instructions for his own conduct.

The distinction matters for both moral and dramatic reasons. If Lady Macbeth creates Macbeth’s ambition from nothing, then his responsibility becomes strangely thin. He is merely the instrument of a stronger will. Shakespeare gives us a more disturbing figure: a man who wants power before his wife urges him to seize it, who knows the murder is wrong while considering it, and who later continues the pattern after her influence has receded. Lady Macbeth helps Macbeth act on his desire. She does not give him the desire itself.

The Letter Reveals a Desire Already in Motion

Lady Macbeth’s first substantial knowledge of Macbeth’s ambition comes through his letter. He reports the witches’ greeting and tells her that he has encountered “the weird sisters” who have promised him a future crown (Shakespeare 1.5). The letter is important because it establishes a private channel between prophecy and desire. Macbeth does not write that the witches have frightened him, nor that he wishes to reject their words. He writes to communicate the possibility of kingship to the person whose response matters most to him.

Lady Macbeth’s reading is therefore not the beginning of the ambition. It is the beginning of her interpretation of it. She receives a message from a husband who has already considered the prophecy significant enough to share. Her response is not to introduce a political goal but to assess whether Macbeth has the temperament to pursue one. She immediately sees a tension between what he wants and what he may be willing to do.

Her famous judgement is often quoted as if it means Macbeth is gentle, passive, or fundamentally uninterested in power. She says that he is “too full o’ the milk of human kindness” to take the nearest route to the crown (Shakespeare 1.5). Yet the sentence does not say that Macbeth lacks ambition. It says that kindness may interfere with the method required to realize it. Lady Macbeth’s concern is not that the crown has failed to attract him. Her concern is that conscience may prevent him from reaching for it.

This reading should be held alongside an important critical objection. Susan Snyder observes that Macbeth himself says surprisingly little about a sustained longing for royal power; in the early scenes, Lady Macbeth often articulates the desire more forcefully than he does (Snyder). That objection does not prove that Macbeth is ambitionless. It does, however, caution us against treating his ambition as a simple, continuous obsession. His desire appears in fragments: in his fearful response to the witches, in his recognition of Malcolm as an obstacle, in his acceptance of Lady Macbeth’s description, and in his own phrase “vaulting ambition.” The argument here is therefore not that Macbeth enters the play with a fully formed political programme. It is that the play gives him enough latent desire for Lady Macbeth’s pressure to have something to activate.

This is the first limit placed on her power. She can identify a conflict, but she did not create either side of it. Macbeth possesses desire and conscience at once. The tragedy begins in that combination. A man who has no ambition would not need to be restrained from murder because the crown would not appear worth the cost. A man without moral awareness would not need to be persuaded because he would not hesitate. Macbeth’s instability comes from wanting the result while understanding the crime.

Lady Macbeth’s language also shows that she expects Macbeth to act on his own desire. She tells him to “look like th’ innocent flower, / But be the serpent under ’t” (Shakespeare 1.5). The advice assumes a concealed purpose. Macbeth must perform innocence because he has a reason to hide what he intends. The serpent is not placed in his mind by her speech; it is a figure for the duplicity she believes he must adopt if he is to pursue the crown.

Her role is already revealing: she is a director of conduct, not an author of desire. She tells Macbeth how to present himself, how to manage Duncan’s trust, and how to convert opportunity into action. She does not tell him what kingship means to him. The letter has already supplied that information.

“Milk of Human Kindness” Does Not Mean Absence of Ambition

The phrase “milk of human kindness” is frequently used to construct a moral contrast between the spouses. Lady Macbeth is hard; Macbeth is soft. She wants the crown; he does not. She is the active mind; he is the reluctant body. But the play does not sustain that clean division. Macbeth’s early language is full of ambition, and his imagination repeatedly moves toward the crown before Lady Macbeth begins her direct persuasion.

After the witches greet him, Macbeth asks why he yields to “that suggestion / Whose horrid image doth unfix my hair” (Shakespeare 1.3). His mind has already produced a frightening image of murder. The witches have not ordered him to kill Duncan. Macbeth’s imagination supplies the possibility. The “suggestion” is powerful because it activates something in him that is already capable of imagining the crown as a political and violent object.

When Duncan names Malcolm Prince of Cumberland, Macbeth sees Malcolm as “a step / On which I must fall down, or else o’erleap” (Shakespeare 1.4). The metaphor is not passive. Macbeth does not describe himself as being carried toward kingship by the prophecy or pushed there by his wife. He sees a political obstacle and imagines overcoming it. His language recognizes two possibilities—submission or violent ascent—and his imagination is already testing the second.

Lady Macbeth enters after this movement has begun. She does not plant the first thought of murder. She encounters a man whose thoughts have already reached the threshold of murder and tries to prevent him from retreating. Her power is real because Macbeth has something for her to work on. The play’s psychology becomes less comfortable, not more, when we acknowledge that fact.

The argument that Lady Macbeth creates ambition also misunderstands the kind of obstacle Macbeth faces. His problem is not that he cannot imagine being king. His problem is that he can imagine it too clearly. He knows Duncan is his relative, his king, and his guest. He understands the moral and political consequences of killing him. His hesitation is not evidence of an empty desire; it is evidence of a desire that has met resistance.

Macbeth’s soliloquy before the murder makes this conflict explicit. He knows that “bloody instructions” return “to plague th’ inventor” and that violent example may come back against the person who begins it (Shakespeare 1.7). He recognizes Duncan’s virtues and his own obligations. He also knows that the murder would advance him. The passage is not a debate between ambition and its absence. It is a debate between ambition and judgement.

Lady Macbeth’s Method Is Conversion, Not Creation

Lady Macbeth’s intervention in Act 1, scene 7 is forceful because she understands that Macbeth’s conflict can be reframed. She does not try to prove that Duncan deserves to die. She does not offer a political theory of legitimate succession. Instead, she turns Macbeth’s hesitation into evidence against his identity.

When Macbeth says that they will “proceed no further in this business,” Lady Macbeth asks whether he was drunk when he first proposed the plan and whether he now considers the promise empty (Shakespeare 1.7). The question is manipulative because it treats a moral reconsideration as a failure of character. Macbeth’s decision to pause is not necessarily cowardice; it may be the last moment in which judgement can interrupt desire. Lady Macbeth makes that pause humiliating.

Her most effective question concerns the relationship between desire and action. She asks whether Macbeth is afraid “to be the same in thine own act and valor / As thou art in desire” (Shakespeare 1.7). The distinction is the centre of her strategy. Macbeth wants the crown, but he has not yet acted in a way that proves he wants it more than he values safety, loyalty, and moral reputation. Lady Macbeth defines that gap as a deficiency in manhood.

The appeal is not merely personal. It exposes a cultural logic in which masculinity is measured by the willingness to endure or inflict violence. Macbeth’s bravery as a soldier is not enough for her. Battlefield courage and domestic murder are made to appear equivalent, even though the moral circumstances are entirely different. Lady Macbeth’s rhetoric collapses the difference between courage and brutality so that Macbeth will experience restraint as shame.

The language itself supports this distinction between object and action. Folger’s analysis of the play’s compressed phrasing notes that the Weird Sisters provide titles without specifying the verbs required to obtain them, while Lady Macbeth supplies the language of action and manly proof (Folger Shakespeare Library). This is a useful refinement of the essay’s thesis. Macbeth’s ambition may be latent, unstable, or partly borrowed from the prophecy, but the murder still requires a transition from wanting or imagining to doing. Lady Macbeth is most powerful at that transition.

Yet the very wording of her argument confirms that the desire precedes the persuasion. She does not ask whether Macbeth wants the crown. She asks whether he is willing to act consistently with what he wants. Her accusation depends on a pre-existing “desire.” If Macbeth had no ambition, her question would have no force. She can make him ashamed of hesitation because she knows he has already imagined the result.

Lady Macbeth’s strategy is therefore conversion. She converts private desire into public identity, hesitation into humiliation, and murder into proof. Conversion can be morally powerful without being creative. A speaker can change the meaning of an impulse without originating it. Macbeth remains the person whose ambition is being redirected into action.

The Plan Does Not Erase Macbeth’s Judgement

Lady Macbeth’s practical plan is one reason she appears to dominate the first act. She explains how Duncan’s guards can be framed, how wine can make them vulnerable, and how the bloody evidence can be placed against them. Her competence contrasts with Macbeth’s disordered imagination. But the existence of a plan does not mean that Macbeth ceases to judge or choose.

He continues to debate the murder after she has supplied the method. He knows that Duncan has honoured him recently and that he should protect his guest. His objections are not the objections of a man who has been dragged into a plot he never wanted. They are the objections of a man who wants the outcome and fears the action. Lady Macbeth’s plan removes practical uncertainty, but Macbeth must still consent to the moral risk.

The scene ends with a decision in Macbeth’s voice. After Lady Macbeth has challenged him and presented the plan, he declares, “I am settled” (Shakespeare 1.7). The phrase marks a change from uncertainty to commitment. Lady Macbeth has influenced the change, but influence is not the same as authorship. Macbeth does not merely repeat her instructions. He accepts the course of action and prepares to perform it.

This distinction matters because the play repeatedly gives Macbeth opportunities to refuse. He could wait for the prophecy to unfold. He could allow Duncan’s succession plans to develop. He could abandon the murder after considering its consequences. He could reject Lady Macbeth’s plan. Each opportunity is narrowed by pressure, but none is eliminated. Tragedy depends on the survival of choice inside pressure.

The Dagger Belongs to Macbeth’s Imagination

The dagger scene further complicates the idea that Lady Macbeth makes Macbeth act. She has planned the murder, but the image that guides Macbeth toward Duncan is his own. He asks whether the dagger before him is “a dagger of the mind, a false creation” proceeding from his “heat-oppressed brain” (Shakespeare 2.1). The hallucinated weapon gives visual form to a thought that has already become an action.

The dagger does not look like Lady Macbeth’s instrument. She is absent from Macbeth’s soliloquy. Her rhetoric has prepared the decision, but his imagination now stages the murder independently. The supernatural and psychological dimensions overlap: the dagger may be a hallucination, a temptation, or a dramatic representation of Macbeth’s divided mind. Whatever its status, the scene belongs to Macbeth’s interior world.

He follows the vision toward Duncan’s room, but he does not do so without awareness. The bell that signals the moment has been rung by Lady Macbeth, yet Macbeth interprets it as a summons to the murder he has accepted. “I go, and it is done,” he says, moving from intention to execution (Shakespeare 2.1). The line is terrifying because it compresses decision and action. Macbeth is not sleepwalking into the crime. He is consciously crossing the interval between them.

Lady Macbeth helps create the circumstances. Macbeth supplies the act. The difference is not a technicality. The tragedy’s moral force depends on the fact that Macbeth’s body does what his mind has decided, even while another person has helped shape the decision.

After the Murder, Lady Macbeth Cannot Carry Macbeth’s Guilt

The immediate aftermath reveals another limit to Lady Macbeth’s influence. She is practical when Macbeth returns from Duncan’s room. He is horrified, distracted, and unable to manage the evidence. He has brought the daggers back with him rather than leaving them beside the sleeping guards. Lady Macbeth tells him to return them, but he refuses. When she says that the deed can be washed away, Macbeth answers that “all great Neptune’s ocean” cannot cleanse the blood from his hand (Shakespeare 2.2).

The exchange does not make Lady Macbeth innocent. Her instruction that “a little water clears us of this deed” is a form of denial, and she participates in the cover-up. But it does show that Macbeth experiences the crime in a way she cannot control. She can tell him what to do with the daggers. She cannot determine what the blood means to him.

Macbeth’s horror is not simply a weakness she has failed to cure. It is evidence that he knows the murder has changed him. He hears a voice that will never sleep again, and he imagines that waking itself has been destroyed by the act. Lady Macbeth can minimize the visible evidence, but she cannot remove the inward consequence. The man who wanted the crown has now discovered the psychological cost of possessing it.

The difference between the spouses is therefore not that one has ambition and the other has none. Both understand the crown as desirable; they differ in how they respond to the moral residue of obtaining it. Lady Macbeth initially tries to treat guilt as a practical problem. Macbeth experiences it as a metaphysical and psychological rupture. Her failure to manage his guilt is also a failure to manage the person she helped recruit.

Macbeth’s Later Violence Proves That His Ambition Is His Own

The strongest evidence against the “Lady Macbeth made him do it” explanation comes after Duncan’s murder. Macbeth’s violence becomes less dependent on her. He does not ask her to help him decide what to do about Banquo. Instead, he plans Banquo’s murder privately and tells her only that she should be “innocent of the knowledge” until the deed is done (Shakespeare 3.2).

This change is structurally important. In the first act, Lady Macbeth supplies the pressure Macbeth needs to move from desire to action. In the third act, Macbeth has learned to generate pressure for himself. He fears Banquo because the witches promised that Banquo’s descendants would be kings. Macbeth’s response is not to wait, nor to ask Lady Macbeth how to interpret the prophecy. He decides that Banquo must die.

Macbeth now understands murder as a political instrument. He speaks of his mind being “full of scorpions” and describes Banquo as a threat to the future he has purchased. The phrase “purchased” matters: Macbeth knows that the crown has been obtained through a transaction in blood. His new violence is an attempt to secure the value of what he bought. Lady Macbeth did not teach him that the first murder could be followed by another. Macbeth’s fear and ambition produce the logic themselves.

His separation from Lady Macbeth also makes the development visible. She asks, “What’s to be done?” about their unease, but Macbeth replies that they must be innocent of the knowledge of the coming deed. He is no longer the man who needs her to devise the plot. He has become the plotter who excludes her. The marriage’s political partnership begins to break because Macbeth’s ambition has outgrown the role she initially played.

The banquet confirms that Macbeth’s violence is no longer dependent on her presence. Lady Macbeth attempts to manage the public scene when he sees Banquo’s ghost. She tells the guests that his condition is temporary and asks him to regain control. Her skill can preserve appearances for a moment, but it cannot restore Macbeth’s inner stability. He is confronted by the consequences of a murder he planned without her.

After the banquet, Macbeth declares that he will return to the witches and that he is “bent to know” the worst by violent means. He has reached a point at which consultation with the supernatural and further bloodshed are part of his own policy. Lady Macbeth’s earlier tactics have become Macbeth’s independent method. He no longer requires her to translate desire into violence because he has internalized the translation.

Lady Macbeth’s Influence Has a Limit Because Macbeth Changes

The argument can be stated too simply in the opposite direction. It would be wrong to say that Lady Macbeth has no responsibility because Macbeth is ambitious. She humiliates him, helps design the murder, participates in deception, and urges him to treat violence as proof of manhood. Her influence is a condition of the first crime. The play does not invite us to excuse her.

But responsibility is not a single quantity that belongs entirely to one person. Lady Macbeth is responsible for what she persuades and helps organize. Macbeth is responsible for wanting the crown, consenting to Duncan’s murder, carrying it out, concealing it, and extending the violence. Their responsibilities overlap without becoming identical.

The distinction becomes especially clear in Macbeth’s response to the second set of supernatural promises. After hearing the apparitions, he immediately decides to kill Macduff’s family. He says that from that moment the first impulses of his heart will be the first impulses of his hand, and he orders the murder before careful thought can intervene. This is a new Macbeth. Lady Macbeth is not directing the decision, and the play does not present her as its cause.

His language reveals the result of his moral development. At the beginning, thought precedes action and produces hesitation. By the middle of the play, thought produces planning. By the end, impulse moves directly into violence. Macbeth has not been permanently controlled by his wife; he has become the person who controls himself toward cruelty.

Lady Macbeth’s absence from these later decisions does not make her earlier influence irrelevant. It makes its consequences more severe. She wanted to help Macbeth cross one threshold. Once he crosses it, he discovers that he can cross others without her. The ambition she tried to release becomes a self-sustaining political logic.

The Tragedy Is Not a Contest Between a Strong Woman and a Weak Man

The “Lady Macbeth made him do it” interpretation also carries a cultural assumption that Shakespeare’s play complicates. It imagines a strong woman as a contaminating force and a man as morally intact until she intervenes. That pattern is too convenient. It turns Macbeth’s ambition into an external infection and makes Lady Macbeth responsible for desires that the play repeatedly locates in him.

Lady Macbeth is certainly associated with a rejection of conventional femininity. She calls on spirits to “unsex” her and asks to be filled with cruelty (Shakespeare 1.5). Her speech dramatizes the way violence has been coded as masculine and compassion as feminine. She wants to escape the identity that she believes would prevent her from acting.

Yet the play does not simply endorse her self-description. Her later sleepwalking scene returns her to the sensory and bodily reality she tried to reject. She rubs her hands, sees blood that cannot be washed away, and repeats fragments of the night’s violence. The woman who once claimed that water could clear the deed becomes unable to escape the deed’s meaning. Her apparent hardness was not immunity.

Macbeth’s relation to masculinity is equally unstable. He is persuaded by the accusation that refusal is unmanly, but he later discovers that violence does not make him secure. His kingship requires more killing because the first act has not produced the inner certainty he wanted. Masculinity functions in the play as a language of pressure, not as a stable moral identity.

Lady Macbeth can use that language against Macbeth because he already cares about the identity it describes. Again, she exploits an existing value. She does not create his concern with courage, honour, or reputation. She redirects those concerns toward murder. That redirection is culpable, but it is not the same as creating ambition.

Lady Macbeth Cannot Make Macbeth Ambitious Because He Already Chooses the Crown

By the final act, the marriage has become a record of two different responses to the same crime. Lady Macbeth collapses inward under the weight of what she helped set in motion. Macbeth moves outward, making the kingdom absorb his fear. She becomes trapped in memory; he attempts to destroy every person who might challenge the future he imagines.

The contrast does not prove that she is weaker or that he is stronger. It proves that the original partnership has divided. She treated murder as a difficult means to a desired end. Macbeth gradually treats murder as the only available means of preserving the end. Her ambition is attached to a plan. His becomes attached to continuation.

That difference helps explain why Lady Macbeth cannot remain the cause of every later act. A person who has learned to act from his own desire no longer needs the original persuader. Macbeth’s later violence is not a repetition of Lady Macbeth’s command. It is the development of a political and psychological pattern that he now owns.

The tragedy therefore refuses both extremes. Macbeth is not an innocent man manufactured into a criminal by his wife. Nor is Lady Macbeth a decorative figure whose influence can be ignored. She is an agent who recognizes Macbeth’s ambition and gives it a method. He is an agent who accepts the method, performs the murder, and later extends the violence beyond her control.

Lady Macbeth can make Macbeth ashamed of hesitation. She can make refusal feel like failure. She can make a private desire appear to demand public proof. What she cannot do is make him want a crown he does not want. The crown is already present in his imagination when she reads the letter. The murder becomes possible because Macbeth has already connected kingship to action. Lady Macbeth pushes him across the threshold, but the desire that waits on the other side is his own.

That is why Macbeth’s ambition matters to an audience. If he were only the victim of prophecy, marital pressure, or supernatural manipulation, the play would be frightening but morally simpler. We could locate the source of the violence outside him and treat his fall as something done to him. Shakespeare instead places the audience beside a man who recognizes the difference between temptation and command, understands the consequences of murder, and repeatedly converts possibility into choice.

The result is not a lesson that outside influences are irrelevant. People can be pressured, misled, shamed, and recruited. The play takes those forces seriously. But it also asks what happens when a person stops treating influence as pressure and begins treating it as permission. Macbeth’s tragedy is that he wants to believe his ambition comes from elsewhere. The more he acts on it, the less convincing that excuse becomes.

Works cited

  1. Shakespeare, William. Macbeth. Edited by Barbara A. Mowat and Paul Werstine. Folger Shakespeare Library, n.d.
  2. Snyder, Susan. “A Modern Perspective: Macbeth.” Folger Shakespeare Library, n.d.
  3. Folger Shakespeare Library. “Reading Shakespeare’s Language: Macbeth.” n.d.