Look at the language Holden uses to describe Phoebe and Allie. How does he view them? Give examples.

Holden is very complimentary and affectionate in talking about his little sister, Phoebe. He loves her very much and likes to brag about her. He says of her that she is intelligent and attractive:

You never saw a little kid so pretty and smart in your whole life. She's really smart. I mean she's had all A's ever since she started school.

He describes her in ways that suggest he really looks at her and notices her. He enjoys talking about her appearance. He writes that sometimes her hair is short and sometimes long, sometimes braided and sometimes not, and he admires her pretty ears and her skinny body.
He also finds he can relate to her and that she understands things, writing:

You'd like her. I mean if you tell old Phoebe something, she knows exactly what the hell you're talking about. I mean you can even take her anywhere with you. If you take her to a lousy movie, for instance, she knows it's a lousy movie . . .

He also says she is affectionate, inquisitive, and emotional.
As for Allie, Holden also writes about him with deep love and affection. He tells us that Allie died of leukemia. He knows the date and repeats it for us. Like Phoebe, Allie is very intelligent in Holden's eyes. He has—or had—Phoebe's red hair. Holden says of him:

But it wasn't just that he was the most intelligent member in the family. He was also the nicest, in lots of ways. He never got mad at anybody. People with red hair are supposed to get mad very easily, but Allie never did, and he had very red hair . . .

We know the depth of Holden's love and grief from the way he breaks his hand smashing garage windows and trying to break the windows of the station wagon after Allie dies. In a world that Holden considers full of phonies, Phoebe and Allie represent purity, goodness, and innocence to him, driving his desire to protect all children.