I live with them for a long time in my head. When I first start writing about a character, I don't know them that well. It's through the process of writing of putting them in scenes, and contemplating them-when I've spent more time with them-that they take on more flesh. When I start writing, I have a lot of characters that I'm not sure what their place in the novel will be...And some characters recede as I put more flesh on them. I think I don't really need them; they're not giving me anything. Or they're there for a particular effect, and that's it.