The paper that is being referred above is <span>"Ode on a Grecian Urn" and "On Seeing the Elgin Marbles" which are poems of John Keats. In the statement, it states the difference between the two wherein "Ode on a Grecian Urn" refers to art as an unchanging truth and "On Seeing the Elgin Marbles" refers to art that changes over time. In this case, the paper states the poems THEMES. </span>
It is dark because Barnardo has trouble seeing the other guard.
This scene takes place at midnight and it is so dark Barnardo cannot see the other guard. Barnardo shows up for his shift, but he can't clearly make out who Francisco is. Francisco has the same problem because instead of answering Barnardo he tells him to identify himself first. They get it figured out and Barnardo begins his shift.
Print sources include any material that is found in print: a traditional book, magazine, or newspaper. In these times of multiple electronic sources, it can be confusing to determine which sources are identified as print. Even if you find a source in an online database, if there is a print (paper) copy somewhere, then you can list this source as print.
