From the text:
"Yes, I can. Yes, I can."
"Well, do it, then."
"I like Allie," I said. "And I like doing what I'm doing right now. Sitting here with
you, and talking, and thinking about stuff, and--"
"Allie's dead--You always say that! If somebody's dead and everything, and in
Heaven, then it isn't really--"
"I know he's dead! Don't you think I know that? I can still like him, though, can't I? Just because somebody's dead, you don't just stop liking them, for God's sake-- especially if they were about a thousand times nicer than the people you know that're alive and all."
Catcher in the Rye