I will drain him dry as hay: / Sleep shall neither night nor day / Hang upon his pent-house lid; / He shall live a man forbid.
Act I, Scene 3 · The Three Witches
Context
The First Witch describes to her sisters the curse she plans to inflict on a sailor whose wife refused to share chestnuts with her.
Analysis
The relentless repetition of "neither...nor" and the harsh monosyllables ("drain," "dry," "forbid") mirror the total, suffocating nature of the curse—there is no escape in time or space. By choosing sleep deprivation as her weapon, the witch picks something that erodes a person slowly, from the inside, making the violence feel insidious rather than dramatic. This establishes early that supernatural harm in the play works through psychological torment, not just physical damage.
Essay Tip
Support a thesis that Shakespeare uses the witches' minor, petty cruelties to preview the kind of internal suffering Macbeth will face—his sleeplessness and mental unraveling aren't accidents but the structure of how evil operates in this world.