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

'Ode on a Grecian Urn; is a poem written by the English Romantic poet John Keats in May 1819, and later published anonymously in the January 1820, Number 15 issue of the magazine Annals of the Fine Arts.

This poem is one of several 'Great Odes of 1819', which include 'Ode on Indolence', 'Ode on Melancholy', 'Ode to a Nightingale', and 'Ode to Psyche'. Keats found earlier forms of poetry unsatisfactory for his purpose, and the collection represented a new development of the ode form. He was inspired to then write the poem after reading two articles by English artist and writer Benjamin Haydon.

Keats was aware of other works on classical Greek art, and had first-hand exposure to the Elgin Marbles, all of which reinforced his belief that classical Greek art was idealistic and captured Greek virtues, which forms the basis of the poem.

John Keats (1795–1821) was one of the principal poets of the English Romantic movement. During his short life, his work received constant critical attacks from the periodicals of the day, but his posthumous influence on poets such as Alfred Tennyson has been immense. Elaborate word choice and sensual imagery characterize Keats's poetry, including a series of odes that were his masterpieces and which remain among the most popular poems in English literature.