Final answer:
The complicated passage "those passions read / Which yet survive, stamped on these lifeless things, / The hand that mocked them, and the heart that fed . . ." could be interpreted as meaning that the passage reflects on the emotions depicted on the urn despite the figures being frozen in time.
Step-by-step explanation:
The complicated passage you quoted is from a poem called 'Ode on a Grecian Urn' by John Keats. In this particular passage, Keats is reflecting on the emotions and passions that are depicted on the urn.
The phrase 'those passions read / Which yet survive, stamped on these lifeless things, / The hand that mocked them, and the heart that fed' suggests that even though the figures on the urn are frozen in time, the emotions they represent still hold meaning and significance. The 'hand that mocked them' refers to the artist who created the urn, and the 'heart that fed' refers to the emotions and inspiration that fueled the creation of the artwork. So therefore the passage reflects on the emotions depicted on the urn despite the figures being frozen in time.