We are such stuff As dreams are made on, and our little life Is rounded with a sleep.
We are made of the same stuff As dreams are, and our short lives Are wrapped up in sleep.
Prospero · Act 4, Scene 1
Prospero interrupts his own magical masque when he remembers Caliban's conspiracy, then speaks these lines to explain why he seems disturbed. The line endures because it collapses the boundary between art and reality, and between life and dream—the deepest uncertainty in the play. It tells us that Prospero, for all his power to control others, cannot escape the fact that all human effort and all human life is as insubstantial as the magic he is renouncing.
This thing of darkness I Acknowledge mine.
This creature of darkness! Admit that he's mine.
Prospero · Act 5, Scene 1
Prospero speaks this when Caliban is brought before the court at the end, claiming ownership of him as his creation and his crime. The line is unforgettable because it contains the only moment of near-accountability Prospero offers—an admission that Caliban belongs to him, is shaped by him, and is therefore his responsibility. Yet even this acknowledgment is framed as possession, not liberation.
My brother and thy uncle, call'd Antonio-- I pray thee, mark me--that a brother should Be so perfidious!
My brother and your uncle, named Antonio-- Please listen to me--that a brother could Be so treacherous!
Prospero · Act 1, Scene 2
Prospero tells Miranda the story of his usurpation by his own brother, the betrayal that launched the entire action of the play. The line endures because it captures the shock of familial treachery—the moment when Prospero must speak a brother's name as though it belongs to a stranger. It establishes that the central wound is not political loss but the violation of the closest human bond.
Now my charms are all o'erthrown, And what strength I have's mine own, Which is most faint:
Now my magic powers are all undone, And whatever strength I have is my own, Which is very weak:
Prospero · Act 5, Scene 0
Prospero speaks the epilogue as he prepares to leave the island and return to Milan, relinquishing the magic that has defined him. The line endures because it is the moment a man recognizes that his power has always been temporary—that art, like life, is an illusion, and that mortality returns the moment we stop performing. It is the closest the play comes to pure honesty about what power costs and what freedom means.
If by your art, my dearest father, you have Put the wild waters in this roar, allay them.
If, by your magic, dear father, you've Caused this storm, please calm it down.
Prospero · Act 1, Scene 2
Miranda, watching the shipwreck, begs her father to stop the storm if he has caused it. The line matters because it reveals Miranda's moral center—she cannot bear suffering even in strangers—and because it is the first hint that Prospero's power may be darker than his control over nature. It establishes the central tension of the play: that mercy and power are in constant negotiation.