'Beauty is truth, truth beauty,' — that is all Ye know on earth, and all ye need to know.

Keats’s line comes from the closing of “Ode on a Grecian Urn” (1819), written during his annus mirabilis of great odes. The poem contemplates an ancient urn whose painted figures—lovers, musicians, a sacrificial procession—are frozen in an eternal moment. Keats contrasts this unchanging, idealized beauty with the transience and pain of human life. The aphorism is presented as the urn’s “speech” to the observer at the poem’s end, as if the artwork itself offers a final, enigmatic lesson. The ode was first published in 1820 in Keats’s third and final volume, shortly before his death in 1821.

The statement compresses a Romantic faith in aesthetic experience into a paradox: beauty and truth are identified rather than merely aligned. In the poem’s context, “truth” is not empirical fact but a kind of enduring insight that art can preserve—an intensity of feeling, an ideal form, a permanence of meaning. Yet the line is also deliberately cryptic: it can be read as a consoling credo (art’s beauty is a sufficient truth) or as a troubling limitation (the urn’s “truth” is all we get, and it may be incomplete). The couplet’s authority is therefore unstable, inviting debate about whether Keats endorses, questions, or ironizes the maxim.

“O Attic shape! Fair attitude! with brede
Of marble men and maidens overwrought,
With forest branches and the trodden weed;
Thou, silent form, dost tease us out of thought
As doth eternity: Cold Pastoral!
When old age shall this generation waste,
Thou shalt remain, in midst of other woe
Than ours, a friend to man, to whom thou say’st,
‘Beauty is truth, truth beauty,’—that is all
Ye know on earth, and all ye need to know.”

1) “Beauty is truth, truth beauty,—that is all / Ye know on earth, and all ye need to know.”
2) “Beauty is truth, truth beauty—that is all / Ye know on earth, and all ye need to know.”
3) “Beauty is truth; truth, beauty.”