"Sylvan historian..."See in text(Ode on a Grecian Urn)
Keats further establishes the urn as a character when he names it "Sylvan historian." Because the urn has been around so long and seen so many people come and go, its timelessness and resilience makes it an active part of history. The epithet "Sylvan historian" almost figures the urn as a mythical deity who has become wise from its many years on earth.
"Not to the sensual ear..."See in text(Ode on a Grecian Urn)
The speaker turns our attention away from the physical ear, attuned as it is to the auditory world. Rather, the speaker refers to the ear of one's heart or mind, which responds to the "sound" of the pipes played in this scene. Thus, Keats refers to a "spirit[ual]" or intuitive hearing that picks up on deeper meanings.