Mother-and-Son, Religion 101.

"I don't see why I can't be all three. Mamaji has two passports. He's Indian and French. Why can't I be a Hindu, a Christian and a Muslim?"
"That's different. France and India are nations on earth."
"How many nations are there in the sky?"
She thought for a second. "One. That's the point. One nation, one passport."
"One nation in the sky?"
"Yes. Or none. There's that option too, you know. These are terribly old-fashioned things you've taken to."
"If there's only one nation in the sky, shouldn't all passports be valid for it?"
A clould of uncertainty came over her face.
"Bapu Gandhi said ---"
"Yes, I know what Bapu Gandhi said." She brought a hand to her forehead. She had a weary look, Mother did. "Good grief," she said.

--- From Life of Pi