“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 details
“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.