Two subway scenes:

On the way home, a man sitting right behind me suddenly said, "Somebody ask me a tough question about God. Any question." Two teenagers took him up on the offer, and then another guy joined in. Soon the whole car was listening. It was a real debate, though I think the questioners let him off easy on the suffering of innocents. It was still going strong when I alighted.

Another day, some guy leaned towards towards me as he walked to a seat and muttered something. I didn't at first understand what he was saying, and as the subway seemed to be full of eccentrics that day I was on my guard, and gave a curt nod without looking up from the Iliad. But as I thought about it I realized what he had said was "Good book!"