melodies are sweet but those unheard Are sweeter This suggests that the imagination and anticipation of pleasure are more gratifying than the experience The urn s portrayal of lovers is forever poised in the pursuit of a kiss It symbolizes the everlasting idealized essence of love that transcends the limitations of reality Escape from the Constraints of Time The urn offers an escape from the passage of time Keats elaborates Thou silent form dost tease us out of thought as doth eternity Here the urn's silence and frozen artistry remove the viewer from the confines of temporal existence This hints at an everlasting realm untouched by the effects of time This escape from the constraints of time grants the urn superiority over mortal things as it exists in a perpetual state of beauty and fascination Keats ultimately establishes the superiority of the Grecian Urn through its ability to preserve eternal beauty He idealized the truths and limitations of mortal life The Urn creates a timeless and unchanging realm of perfection