TYB!
The Catcher in the Rye takes the loss of innocence as its primary concern. Holden wants to be the “catcher in the rye”—someone who saves children from falling off a cliff, which can be understood as a metaphor for entering adulthood. As Holden watches Phoebe on the carousel, engaging in childlike behaviour, he is so overcome with happiness that he is, as he puts it, “damn near bawling.” By taking her to the zoo, he allows her to maintain her childlike state, thus being a successful “catcher in the rye.” During this time, however, watching her and the other children on the carousel, he has also come to accept that he cannot save everyone: “If they want to grab for the gold ring, you have to let them do it, and not say anything. If they fall off, they fall off.”
Holden’s name is also significant: Holden can be read as “hold on,” and Caulfield can be separated into caul and field. Holden’s desire is to “hold on” to the protective covering (the caul) that encloses the field of innocence (the same field he wishes to keep the children from leaving). Holden desperately wants to remain true and innocent in a world full of, as he puts it, “phonies.” Salinger once admitted in an interview that the novel was semi-autobiographical.