MUTABILITY. by Percy Bysshe Shelley: Summary, Meaning & Analysis
Shelley's "Mutability" highlights the idea that nothing in human life remains constant — our moods, thoughts, and feelings are always changing, and the only certainty we have is that change is inevitable.
The poem
[Published with “Alastor”, 1816.] We are as clouds that veil the midnight moon; How restlessly they speed, and gleam, and quiver, Streaking the darkness radiantly!—yet soon Night closes round, and they are lost for ever: Or like forgotten lyres, whose dissonant strings _5 Give various response to each varying blast, To whose frail frame no second motion brings One mood or modulation like the last. We rest.—A dream has power to poison sleep; We rise.—One wandering thought pollutes the day; _10 We feel, conceive or reason, laugh or weep; Embrace fond woe, or cast our cares away: It is the same!—For, be it joy or sorrow, The path of its departure still is free: Man’s yesterday may ne’er be like his morrow; _15 Nought may endure but Mutability. NOTES: _15 may 1816; can Lodore, chapter 49, 1835 (Mrs. Shelley). _16 Nought may endure but 1816; Nor aught endure save Lodore, chapter 49, 1835 (Mrs. Shelley). ***
Shelley's "Mutability" highlights the idea that nothing in human life remains constant — our moods, thoughts, and feelings are always changing, and the only certainty we have is that change is inevitable. He uses clouds and old stringed instruments to illustrate our restless and unpredictable nature. The poem wraps up with a stark realization: nothing endures except the truth that nothing endures.
Line-by-line
We are as clouds that veil the midnight moon; / How restlessly they speed, and gleam, and quiver,
Or like forgotten lyres, whose dissonant strings / Give various response to each varying blast,
We rest.—A dream has power to poison sleep; / We rise.—One wandering thought pollutes the day;
It is the same!—For, be it joy or sorrow, / The path of its departure still is free:
Tone & mood
The tone is calm yet unsettling—like someone delivering bad news in an even voice. Shelley isn't angry about change or lamenting it; he's just presenting it as reality. There’s a cool resignation present, interrupted by the exclamatory dashes that imply he’s surprised by what he already understands. By the final line, the tone has transformed into something nearly stoic.
Symbols & metaphors
- Clouds veiling the midnight moon — The clouds symbolize human beings — briefly bright, always shifting, and eventually consumed by darkness. The midnight backdrop removes any reassuring daylight, making the vanishing seem permanent rather than part of a cycle.
- Forgotten lyres — The Aeolian lyre, gently played by the wind, symbolizes the human mind: we don’t control our moods or thoughts; we just react to the forces around us. The term "forgotten" brings in a sense of neglect and disconnection—these instruments lack a master and an audience.
- The path of departure — This image of an open road or doorway, allowing any feeling to flow freely, embodies the central idea that nothing — neither joy nor sorrow — lasts forever. The "path" remains clear and ready to take something away from us at any time.
- Yesterday and morrow — The connection between yesterday and tomorrow represents the entirety of human time. By claiming that the two can never be alike, Shelley undermines the notion of a stable self that endures over time.
Historical context
Shelley published "Mutability" in 1816 alongside his longer poem *Alastor*, during a particularly chaotic time in his life. He had just separated from his first wife Harriet and had eloped with Mary Godwin, who would later become Mary Shelley. Living as a social outcast in England, the couple eventually left for Europe. The poem is deeply rooted in the Romantic tradition of reflecting inner feelings through nature, but it lacks the comfort that many Romantic poems provide. While Wordsworth might discover renewal in nature's cycles, Shelley sees only continuous change. The poem also shows the influence of Platonic philosophy, which Shelley had been studying — the notion that the material world is in constant flux, while only abstract ideals remain unchanged. The variant readings from 1835, introduced by Mary Shelley in her novel *Lodore*, highlight her deep engagement with his work even after his death in 1822.
FAQ
The poem's main idea is that change is the only constant in human life. Our moods, thoughts, and feelings are always in flux, and nothing — not happiness, not grief, and not even our sense of self — stays the same long enough to be trusted.
It suggests that the one constant in life is change itself. Everything else — our emotions, experiences, and the people in our lives — eventually fades away. This line captures the essence of the entire poem, serving as both a thought-provoking insight and a subtle blow to the gut.
An Aeolian lyre, also known as a wind harp, is a stringed instrument set up in a window or doorway, allowing the wind to play it on its own. Shelley chooses this instrument because it lacks agency; it simply reacts to the forces around it. This passivity perfectly reflects his view of the human mind: we don’t have control over our inner states; we merely respond to external influences.
The poem consists of four quatrains, each with four lines, following an ABAB rhyme scheme. While the meter is mostly iambic pentameter, Shelley introduces variations to prevent it from sounding mechanical. This consistent structure ironically contrasts with the theme of ongoing instability.
It really depends on your interpretation. Shelley doesn’t provide hope or comfort, which makes it feel pretty bleak. However, there’s also a liberating aspect to the notion that sorrow, just like joy, will eventually leave — "the path of its departure still is free." The poem isn’t about wallowing in despair; it’s more about diagnosing the situation.
The theme of impermanence is a recurring element in much of Shelley's work. *Ozymandias* illustrates the downfall of human power and legacy. Similarly, *Ode to the West Wind* employs wind and the natural flow of life as metaphors for change, but this poem carries a more personal sense of anguish and concludes with a hopeful tone.
Midnight is the darkest moment — there's no sunrise on the horizon to rescue the image. The clouds shine momentarily against that darkness, making their disappearance feel more absolute. If Shelley had depicted a daytime sky, the clouds would merely be clouds. But at midnight, their vanishing feels like extinction.
Mary Shelley made some slight alterations to those lines in her 1835 novel *Lodore* — swapping "may" for "can" and changing "Nought may endure but" to "Nor aught endure save." While the meaning remains largely unchanged, these variations indicate that she continued to engage with his poems long after his death, viewing them as dynamic works rather than static relics.