Answer:
When old age shall this generation waste,
Thou shalt remain, in midst of other woe
Step-by-step explanation:
In the excerpt from "Ode on a Grecian Urn," by John Keats, the speaker makes reference to the beautiful designs on the urn, which he considers immortal. In that respect, he believes the pictures painted on the urn -depicting love and a sacrifice- are eternal because time cannot change them. As a result, he acknowledges the urn will outlive his generation, thus keeping its art endless.