Shelley opens by retracting himself. "And said I that all hope was fled" begins with "And," dropping us into the middle of an argument, as if the speaker has just caught himself overstating his misery. The first stanza lists the claim: sorrow, despair, every wish sunk "beneath pale Misery's shrine." The rest of the poem corrects it. Its central idea is more daring than the title suggests. Hope may well be a deceiver, and the speaker chooses to believe in it anyway, trusting that its final promise, reunion with loved ones "beyond the tomb," is true.
The second and third stanzas build the poem's main comparison. A sunbeam falls on a mountain's "craggy brow" and "robes with liquid streams of light" the rocks until they look "so fair,--so bright." The sun has not changed the stone, only how it appears. Hope, the poem says, does the same to the future, showing "distant hours" in "softer view" and dressing each coming day in "fairer, brighter flowers." The clothing words, "robes" and "dressed," are telling. Both suggest a covering laid over something else, so the poem plants its own suspicion before the speaker voices it. The verbs do similar work. Hope "shows" the rocks, "shows" the hours, and in the last line "shows a balm." Hope here is a way of seeing, not a way of changing things. Distance matters too. The mountain is "distant" and so are the hours, and things look kindest from far away.
The fourth stanza turns to winter. Flowers are "frozen but to bud anew," a reassuring cycle of death and return. Then the speaker breaks into direct address: "sweet deceiver calm my bosom, / Although thy visions be not true." The phrasing is tender and slightly desperate. He admits the vision may be false and asks to be comforted regardless. The fifth stanza answers itself in a rush: "Yet true they are,--and I'll believe." The dashes catch the speaker mid-decision, as though faith is something he argues himself into rather than calmly possesses. His reasoning is that God "never made thee to deceive," so if hope seems to fail, "'Tis sin that bade thy empire cease." The logic is a little circular, but that makes the speaker feel human.
The form is steady and plain. There are six quatrains rhymed ABAB, and the lines mostly run in eight-syllable, iambic beats. That evenness suits a poem that is trying to calm someone, including its speaker. The rhymes are mostly simple (fled/dead, ray/day, gloom/tomb), but "believe" and "deceive" is the pairing that matters. By rhyming the two words, the poem ties trust and betrayal together. Some rhymes are looser. "Glow" and "brow" match on the page but not in sound, and "blossom" and "bosom" sit close as near-echoes, linking the flower to the chest it is meant to soothe.
The diction is formal and sometimes stiff. "Pale Misery," "sweet expectation," "vermeil tinted flowers" and "Had sank" all feel like inherited poetic furniture. Judging by the language, the poem leans on convention more than on surprise. Even so, the last stanza reworks its earlier phrases well. "Though despair my life should gloom, / Though horror should around me close" turns a noun into a verb and lets the darkness gather, only to be answered by "a balm for all my woes." That "all" mirrors the opening claim that "all hope was fled." Total despair is swapped for total consolation, and the earlier talk of distant days stretches out to the farthest distance, past death.
The poem is worth reading for its honesty rather than its polish. Many consoling poems simply insist that things will improve. This one lets the objection speak first, calls hope a "deceiver" to its face, and then makes a deliberate choice. Hope is not proven here. It is chosen, with the doubt still visible in the dashes, and that gives a modest poem its force.