Shelley's poem begins as an accusation. The speaker rounds on the whole planet, outraged that Earth can still "leap forth" in "morning mirth" now that Napoleon is dead, as the title tells us. The question is absurd and rather magnificent: surely the world should stop moving when a figure this large falls. But Earth answers back. The poem's real subject is the collision between a human sense of importance and nature's indifference, and the speaker comes off worse.
The sound of the poem carries much of the argument. Almost every stanza hangs on a cluster of "-old" rhymes: bold, old, cold, fold, told, rolled, gold, mould. The words keep returning, like a bell, and the bell is literal in the phrase "his death-knell knolled," where "knolled" tolls inside the rhyme scheme itself. Each eight-line stanza follows the same pattern, with the first six lines interlocking around two rhyme sounds and the last two closing in a couplet. In every stanza that couplet ends on "dead" ("fled/dead," "fed/dead"), so death becomes the fixed point the poem keeps landing on. The lines are also shaped to match. The early lines are short and bouncy, almost skipping, which suits Earth's "leaping." The closing couplet of the first stanza stretches out into longer, heavier lines ("And canst thou move, Napoleon being dead?"), as if the speaker's indignation slows to a funeral march.
Shelley also uses a familiar, domestic image to undercut the speaker's grandeur. Earth is an old woman "warming her fingers old" over the "embers covered and cold" of Napoleon's "most fiery spirit." The great conqueror becomes a dying fire, and the planet simply benefits from the warmth. It is a shrewd, slightly cruel picture, because it makes the speaker's question ("do you laugh now he is dead?") sound childish.
When Earth replies, she turns the speaker's own word against him. He called her "overbold," and she answers, "It is thou who art overbold." From here the poem becomes a speech about recycling. Earth takes "all my sons" to her "bosom," and "the quick spring" rises "like weeds out of the dead." The dead are fertiliser, not monuments. She was "cloudy, and sullen, and cold, / Like a frozen chaos uprolled" until "the spirit of the mighty dead" warmed her. The tone is unsettling, and Shelley shows it changing through the verbs that introduce her speech. She "replied," then "sung," then "shouted," and finally "muttered." By the last stanza the triumphant voice has dropped to something darker.
That final stanza is where the poem stops being a simple lesson about nature. Earth now judges Napoleon, and harshly: his spirit "rolled, / In terror and blood and gold, / A torrent of ruin to death from his birth." The image of a flood sweeping everything along contrasts with the gentler warmth of the earlier stanzas. The ending is hard to pin down. The followers are told to "mould the metal before it be cold," and his "shame," which "like the dead / Shrouds" Earth, is to be woven together with "the hopes that from his glory fled." Judging by the imagery, those hopes seem to be ideals once attached to Napoleon that have now drifted away from him, though Shelley leaves the exact meaning open. What is clear is that the poem allows neither worship nor simple condemnation. Napoleon is both a "fiery spirit" and a bringer of ruin, and both facts are absorbed into the same soil.
That refusal is what makes the poem worth reading. It would have been easy to write an elegy or a denunciation. Shelley instead stages an argument in which the speaker's rhetoric is deflated by a character who has watched empires, and their ruins, come and go. Even the poem's repeated "bold" turns slippery, because it begins as an insult to Earth, becomes Earth's boast, and ends as a verdict on a man. The poem suggests that history's great figures feel enormous to the people living through them, and that nature will still be turning them into spring.