"Ode on a Grecian Urn" is a poem by John Keats that explores the relationship between art and life. The poem describes a beautifully crafted Grecian urn adorned with scenes of nature and human activity, capturing moments that are eternal and unchanging. Throughout the poem, Keats reflects on the themes of beauty, truth, and the passage of time. The urn serves as a symbol of artistic permanence, contrasting with the fleeting nature of human experiences. Ultimately, the poem suggests that while life is transient, art can preserve moments forever.