What quote answers this question from the book?

Luke gave Percy a pair of basketball shoes that he had received from his father.

Luke came running up the hill, carrying a pair of bas-ketball shoes.
"Hey!" he panted. "Glad I caught you."
Annabeth blushed, the way she always did when Luke was around.
"Just wanted to say good luck," Luke told me. "And I thought ... um, maybe you could use these."
He handed me the sneakers, which looked pretty nor-mal. They even smelled kind of normal.
Luke said, "Maia!"
White bird's wings sprouted out of the heels, startling me so much, I dropped them. The shoes flapped around on the ground until the wings folded up and disappeared.
"Awesome!" Grover said.
Luke smiled. "Those served me well when I was on my quest. Gift from Dad. Of course, I don't use them much these days...." His expression turned sad.

Chiron gave Percy a pen that had belonged to his father.

He pulled a pen from his coat pocket and handed it to me. It was an ordinary disposable ballpoint, black ink, removable cap. Probably cost thirty cents.
"Gee," I said. "Thanks."
"Percy, that's a gift from your father. I've kept it for years, not knowing you were who I was waiting for.
But the prophecy is clear to me now. You are the one."
I remembered the field trip to the Metropolitan Museum of Art, when I'd vaporized Mrs. Dodds. Chiron had thrown me a pen that turned into a sword. Could this be ... ?