In the first stanza, the speaker stands before an ancient Grecian urn and addresses it. He is preoccupied with its depiction of pictures frozen in time. It is the “still unravish’d bride of quietness,” the “foster-child of silence and slow time.” He also describes the urn as a “historian” that can tell a story. He wonders about the figures on the side of the urn and asks what legend they depict and from where they come. He looks at a picture that seems to depict a group of men pursuing a group of women and wonders what their story could be: “What mad pursuit? What struggle to escape? / What pipes and timbrels? What wild ecstasy?”
In the second stanza, the speaker looks at another picture on the urn, this time of a young man playing a pipe, lying with his lover beneath a glade of trees. The speaker says that the piper’s “unheard” melodies are sweeter than mortal melodies because they are unaffected by time. He tells the youth that, though he can never kiss his lover because he is frozen in time, he should not grieve, because her beauty will never fade. In the third stanza, he looks at the trees surrounding the lovers and feels happy that they will never shed their leaves. He is happy for the piper because his songs will be “for ever new,” and happy that the love of the boy and the girl will last forever, unlike mortal love, which lapses into “breathing human passion” and eventually vanishes, leaving behind only a “burning forehead, and a parching tongue.”
In the fourth stanza, the speaker examines another picture on the urn, this one of a group of villagers leading a heifer to be sacrificed. He wonders where they are going (“To what green altar, O mysterious priest...”) and from where they have come. He imagines their little town, empty of all its citizens, and tells it that its streets will “for evermore” be silent, for those who have left it, frozen on the urn, will never return. In the final stanza, the speaker again addresses the urn itself, saying that it, like Eternity, “doth tease us out of thought.” He thinks that when his generation is long dead, the urn will remain, telling future generations its enigmatic lesson: “Beauty is truth, truth beauty.” The speaker says that that is the only thing the urn knows and the only thing it needs to know.
“Ode on a Grecian Urn” follows the same ode-stanza structure as the “Ode on Melancholy,” though it varies more the rhyme scheme of the last three lines of each stanza. Each of the five stanzas in “Grecian Urn” is ten lines long, metered in a relatively precise iambic pentameter, and divided into a two part rhyme scheme, the last three lines of which are variable. The first seven lines of each stanza follow an ABABCDE rhyme scheme, but the second occurrences of the CDE sounds do not follow the same order. In stanza one, lines seven through ten are rhymed DCE; in stanza two, CED; in stanzas three and four, CDE; and in stanza five, DCE, just as in stanza one. As in other odes (especially “Autumn” and “Melancholy”), the two-part rhyme scheme (the first part made of AB rhymes, the second of CDE rhymes) creates the sense of a two-part thematic structure as well. The first four lines of each stanza roughly define the subject of the stanza, and the last six roughly explicate or develop it. (As in other odes, this is only a general rule, true of some stanzas more than others; stanzas such as the fifth do not connect rhyme scheme and thematic structure closely at all.)
If the “Ode to a Nightingale” portrays Keats’s speaker’s engagement with the fluid expressiveness of music, the “Ode on a Grecian Urn” portrays his attempt to engage with the static immobility of sculpture. The Grecian urn, passed down through countless centuries to the time of the speaker’s viewing, exists outside of time in the human sense—it does not age, it does not die, and indeed it is alien to all such concepts. In the speaker’s meditation, this creates an intriguing paradox for the human figures carved into the side of the urn: They are free from time, but they are simultaneously frozen in time. They do not have to confront aging and death (their love is “for ever young”), but neither can they have experience (the youth can never kiss the maiden; the figures in the procession can never return to their homes).
The speaker attempts three times to engage with scenes carved into the urn; each time he asks different questions of it. In the first stanza, he examines the picture of the “mad pursuit” and wonders what actual story lies behind the picture: “What men or gods are these? What maidens loth?” Of course, the urn can never tell him the whos, whats, whens, and wheres of the stories it depicts, and the speaker is forced to abandon this line of questioning.