What do the following quotes from The Catcher in the Rye mean? "That's the whole trouble. You can't ever find a place that's nice and peaceful, because...

The first
quote speaks to 's concern with his own adolescent loss of innocence and his desire to protect
children like his sister in their own innocence. When he arrives at his old school to deliver a
note to , he sees "f**k you" written on a wall. He rubs it out, then sees a second
iteration elsewhere in the school. This one is etched in, perhaps carved with a knife, and he
can't erase it. He can't, in other words, remake the world to be innocent. At a nearby museum,
undoubtedly the Metropolitan Museum of Art, he meets two boys who have skipped school and want
to see the mummy exhibit. They chicken out, and alone by himself in the exhibit, Holden begins
to feel peaceful. Then he sees the words "f**k you" again. This is where the first
quote enters: Holden can find no place of innocence in which he can escape adult knowledge. He
can't return to the childhood garden of Eden. He is living in a fallen, imperfect world, and the
words "f**k you" come to represent that fallenness to him.

In the
second quote, the last line of the novel, Holden is feeling the pain of memory. His
"missing everybody" suggests that he is feeling positive emotions towards other
people, even people he dislikes. This ability to feel and have some nostalgia for his old life
signals hope for his recovery.