Answer:
The narrator is remarking that trees make the night darker.
Explanation:
Allen Ginsberg was an American poet. He wrote the poem "A Supermarket in California" in 1956 that was first published in Howl. In the poem, the narrator visits a supermarket in California where he imagines himself following Walt Whitman who was shopping in the supermarket of California.
The meaning of this phrase ''The trees add shade to shade'' means the narrator is remarking that trees make the night darker.
"but the great man is he who in the midst of the crowd keeps with perfect sweetness the independence of solitude."
This is the line that conveys what you are asking. In other words, it talks about keeping your individuality even in a "crowd," or with others. But if you analyze it, he still does not encourage withdrawing from the crowd but being "in the midst" of society while maintaining your independence/ individuality.
If you're talking about the poem by Edith M. Thomas then I believe that the central idea is about how people can base something off of their looks. I'm not completely sure, but it talks a lot about how they look dead, but then explain that they are not. To me that makes it sound a lot like the saying "don't judge a book by its cover".
It could also mean that things take time to grow into something beautiful, and before that happens, you have to go through something difficult, seeming as if it is the end of the world. But then you blossom and bloom and everybody will look in awe.
I'm not completely sure these are right, and I'm not sure we read the same poem, but you didn't state the author's name. This was just off the top of my head but I hope it helps you or gives you an idea :)
A shipmate cried out three times for each life lost.
Six men from each ship lost their lives at Cicones.
The men were greatly saddened by the loss of their friends.
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