From “Ode on a Grecian Urn” by John Keats Thou, silent form, dost tease us out of thought As doth eternity: Cold Pastoral! When old age shall this generation waste, Thou shalt remain, in midst of other woe Than ours, . . . What is the speaker telling the Grecian urn in these lines from “Ode on a Grecian Urn”?