I was surprised by the extraordinary hospitality I encountered on my trip. And I still remember the politeness with which one elderly gentleman addressed me in a bookshop. He held a copy of my latest novel, "The Reluctant Fundamentalist," and examined the face on its cover, comparing it to mine. Then he said, nodding once as if to dip the brim of an imaginary hat: "So tell me, sir. Why do they hate us?"

That stopped me cold.