I don’t know if other writers do this, but I frequently find myself having conversations with myself about things that are going on in my life. Sometimes I’m rehashing events that happened, and sometimes I’m philosophizing on the nature of things. Then I take this conversations and give them to a couple of characters in one of my stories. There’s some of this in all my books, especially His Robot Girlfriend and The Many Adventures of Eaglethorpe Buxton. But probably the most influenced by these conversations is Princess of Amathar. Part of that is because I wrote it over a long period of time, so there are conversations that I had with myself about money, relationships, family, prestige, power, pets, telecommunications, and a whole bunch of other stuff.
In the shower this morning I had just such a conversation with myself about the nature of belief. I think it will be in The Young Sorceress, probably as a conversation between Iolana Staff and her father, although her mother may be involved too.