Source identified1
“A thing of beauty is a joy for ever.”
Keats opens the poem by claiming that beauty can continue to give delight beyond the instant in which it is first encountered.
Source note: Endymion, Book I, opening line; Project Gutenberg #24280. This is a poetic proposition within a Romantic work, not an empirical rule that every aesthetic experience remains pleasurable forever.
Source identified2
“Its loveliness increases; it will never pass into nothingness”
The continuation imagines beauty as something whose value can deepen in memory and imagination rather than simply fading with the moment.
Source note: Endymion, Book I; Project Gutenberg #24280. The line directly continues “A thing of beauty is a joy for ever” and belongs to the poem’s idealizing Romantic account of beauty.
Source identified3
“Beauty is truth, truth beauty”
The compressed closing formula binds beauty and truth inside the ode’s meditation on art, inviting interpretation rather than offering a settled philosophical definition.
Source note: “Ode on a Grecian Urn,” in Keats: Poems Published in 1820; Project Gutenberg #23684. The words are presented as the urn’s closing message, so the source page preserves the dramatic-poetic framing.
Source identified4
“Heard melodies are sweet, but those unheard are sweeter.”
The ode privileges imagined music over audible performance, presenting imagination as capable of sustaining an ideal beauty that physical sound cannot preserve indefinitely.
Source note: “Ode on a Grecian Urn,” in Keats: Poems Published in 1820; Project Gutenberg #23684. The line addresses figures represented on the urn and belongs to the poem’s meditation on art, imagination and permanence.
Source identified5
“Beauty is truth, truth beauty,—that is all ye know on earth, and all ye need to know.”
The famous closing joins beauty and truth in a deliberately compressed claim that continues to invite debate rather than a single easy reading.
Source note: “Ode on a Grecian Urn,” closing lines.
Source identified6
“The poetry of earth is ceasing never.”
Keats closes the sonnet by insisting that nature’s music changes performers with the seasons but never truly stops.
Source note: On the Grasshopper and Cricket, final line; the cricket continues the earth’s poetry in winter.