It represents Holden's love for his deceased brother as well as Allie's authentic uniqueness.
For most of the book, he sounds like a grumpy old man who is angry at the world, but his search for the ducks represents the curiosity of youth and a joyful willingness to encounter the mysteries of the world.
It is a memorable moment, because Holden clearly lacks such willingness in other aspects of his life.
He says he would like to protect the children from falling off the edge of the cliff by “catching” them if they were on the verge of tumbling over.
As Phoebe points out, Holden has misheard the lyric.
As he tells Phoebe, "You never saw so many mean guys in your life." Holden dislikes the exclusivity and the prejudice against those who are neither attractive nor hip.
He is ashamed of himself for going along with the crowd and joining a secret fraternity.
It is inseparable from our image of Holden, with good reason: it is a symbol of his uniqueness and individuality.
The hat is outlandish, and it shows that Holden desires to be different from everyone around him.
Preparatory School Life A literary symbol is something, often an object, that stands for a significant concept or series of ideas.
Sometimes it is emblematic of the values of the characters.