The Annotated Edition
ON THE MEDUSA OF LEONARDO DA VINCI IN THE FLORENTINE GALLERY. by Percy Bysshe Shelley
Shelley gazes at a painting he thinks is by Leonardo da Vinci, depicting the severed head of Medusa.
- Themes
- art, beauty, death
§01Quick summary
What this poem is about
§02Themes
Recurring themes
§03Line by line
Stanza by stanza, with notes
It lieth, gazing on the midnight sky, / Upon the cloudy mountain-peak supine;
Editor's note
Shelley begins by portraying the Medusa head as if it were alive and at rest — lying on its back atop a mountain peak, gazing up at the night sky. The term *supine* (face-up) imparts a peculiar, passive dignity to the severed head. The lands below appear "tremblingly," suggesting the fear that this image evokes. Immediately, the poem's central paradox emerges: both its horror and beauty are labeled as "divine" — equally potent and beyond the scope of ordinary human understanding.
Yet it is less the horror than the grace / Which turns the gazer's spirit into stone,
Editor's note
This is the philosophical core of the poem. Shelley reinterprets the Medusa myth: while she typically turns people to stone through fear, in this version, it is her *grace* — her beauty — that petrifies. The notion is that beauty intertwined with pain is more intense than ugliness alone. The features of the face are said to be "graven" into the viewer's mind until thought itself disappears, suggesting that the image is so striking it overwhelms rational thought.
And from its head as from one body grow, / As ... grass out of a watery rock,
Editor's note
Now Shelley focuses on the snakes. He likens them to grass sprouting from wet rock — something natural and almost ordinary — before quickly reminding us that they are vipers. They twist, intertwine, and shine with what he describes as "mailed radiance" (armoured brightness). The term *involutions* encapsulates how the snakes continuously coil in on themselves. The last image of them "sawing" the air with their open jaws is strikingly violent, sharply contrasting with the beauty described in the previous stanza.
And, from a stone beside, a poisonous eft / Peeps idly into those Gorgonian eyes;
Editor's note
Shelley fills the scene with creatures under Medusa's influence. A small lizard (an *eft*) gazes into her eyes with an unsettling nonchalance. A bat, crazed by the peculiar light, flits from a cave like a moth lured to a flame. These animals respond instinctively—the bat is drawn to the deadly light, just as the human viewer is compelled to stare at the painting. The midnight sky itself "flares," hinting that the Medusa head emits a light more unsettling than darkness.
'Tis the tempestuous loveliness of terror; / For from the serpents gleams a brazen glare
Editor's note
The final stanza presents Shelley's most succinct expression of his theme: "the tempestuous loveliness of terror." The light reflected from the snakes transforms the air into a shifting mirror that reveals both beauty and terror simultaneously — they can't be separated. The poem concludes by reducing everything to its most basic, human elements: a woman's face, with snake hair, lifeless, gazing up at heaven from wet rocks. That last image is purposefully simple after all the intricate descriptions, making its impact all the more powerful.
§04Tone & mood
How this poem feels
§05Symbols & metaphors
Symbols & metaphors
- The Medusa head
- The severed head, the poem's central symbol, conveys the notion that beauty and terror are not opposing forces but rather two perspectives of the same reality. It also illustrates art's ability to transform something distressing into something captivating that you can't help but gaze at.
- The serpents / vipers
- The snakes aren’t merely terrifying decorations. They illustrate how beauty can be perilous — vibrant, twisting, and deadly — while also emitting the very light that lures creatures (and onlookers) to their own doom.
- Petrification (turning to stone)
- Shelley offers a new take on the myth's key moment. Being turned to stone signifies an experience where beauty and terror intertwine to the point that thought ceases. This serves as a metaphor for the immobilizing impact of sublime art.
- The bat and the eft (lizard)
- These small creatures represent the human viewer. They are irresistibly drawn to the dangerous light — the bat, much like a moth to a flame — illustrating that the urge to gaze at terrible beauty comes from instinct, not reason.
- The midnight sky
- The dark sky surrounds the Medusa head and is changed by it — the sky "flares" with a light that is "more dread than obscurity." Darkness would feel safer; it's the horrifying glow of the Gorgon that makes the night even more frightening than it already is.
- The wet rocks
- The final image anchors the poem in a stark, physical reality after all its philosophical musings. The wet rocks serve as a reminder that this is a dead woman's head — mortal, material, and resting in the dark — which makes the beauty described throughout the poem feel even more poignant and unsettling.
§06Historical context
Historical context
§07FAQ
Questions readers ask
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