“Po swirled upward from where it had been sitting, and floated over to the window. "When you go swimming and you put your head under the water," Po said, "and everything is strange and underwater-sounding, and strange and underwater-looking, you don't miss the air do you? You don't miss the above-water sounds and the above-water look. It's just different." "True." Liesl was quiet for a moment. Then she added, "But I bet you'd miss it if you were drowning. I bet you'd really miss the air then.”

“Liesl knew then that Po had been lying. The ghost did miss the living side. She understood then, too, that everyone drowns differently; and that for everyone, even ghosts, there is a different kind of air.”

“Will asked Miss Beasley what kind of man Glendon Dinsmore had been and she answered, as different from you as air is from earth. He asked which he was, air or earth? She laughed and said, "That's what I like about you—you really don't know.”

“She died in a fire. I miss her like you... If I was underwater, I wouldn't miss oxygen that much.”

“What do you miss about being alive?"The sound of my mom singing, a little off-key. The way my dad went to all my swim meets and I could hear his whistle when my head was underwater, even if he did yell at me afterward for not trying harder. I miss going to the library. I miss the smell of clothes fresh out of the dryer. I miss diving off the highest board and nailing the landing. I miss waffles" - p. 272.”

“To have faith is to trust yourself to the water. When you swim you don't grab hold of the water, because if you do you will sink and drown. Instead you relax, and float.”