I usually write away from home, in coffee shops, on trains, on planes, in friends' houses. I like places where there's stuff going on that you can lift your eyes, see something interesting, overhear a conversation.
“Sometimes a neighbor whom we have disliked a lifetime for his arrogance and conceit lets fall a single commonplace remark that shows us another side, another man, really; a man uncertain, and puzzled, and in the dark like ourselves.”