What theme is emphasized in this excerpt from "ode on a grecian urn" by john keats

  the theme that is emphasized in the excerpt from "ode on a grecian urn" by john keats is that the unfulfilled desires and dreams seem sweeter. it is can be seen from the lines: heard melodies are sweet, but those unheard  are sweeter; therefore, ye soft pipes, play on; not to the sensual ear, but, more endear'd,hope this . mark brainliest