In William Shakespeare's "Sonnet 18," the line best paraphrases to but your youth will never fade.
In "Sonnet 18" Shakespeare tries to compare a fair maiden to a summer's day, but he expresses that there is nothing that compares to her because her perpetual beauty and youth are far greater than such a temporary, inconsistent season.
So, when Shakespeare writes <span>"<span>But thy eternal summer shall not fade,</span>" he is saying that her timeless youth will never fade, unlike the briefness of a summer's day.</span>
<span>"By
having the narrator describe the darkness as a force that has a
physical impact on him, Poe helps create a claustrophobic mood and a
sense of the narrator's great fear and discomfort." Should be the answer :D</span>