Inevitably I draw on my own relationships when I write, so if I'm writing about a fight between a husband and his wife, of course I'm going to think about a recent fight with my husband. Or if I'm writing about sisters, of course I'm going to think about my sister.
“For the things of this world cannot be made known without a knowledge of mathematics.”
“I've got news for you: There are going to be people other than Christians in the hereafter. What are you going to do about it? Are you not going to go?”