. >> rose: lauren groff is the author of "fates and furies." her third novel, and according to the "wall street journal," it made more year-end best-of lists than any other work of fiction. president obama called it his favorite novel of the year. it revolves around two very different views of a marriage. >> i don't have any secrets. i'm an open book. but i resist the idea that in a healthy marriage, everyone knows everything about the other person. i think -- >> i think you're absolutely right. >> it's not healthy. it's not good. one needs mystery within one's self in order to be a functional human being, i believe, things you don't tell other people. >> rose: including your spouse. >> uh-huh. and in fact i think intimacy is much more interesting when there is something held back a little bit. right. you can actually reach a different kind of intimacy when you have your own autonomy. so i guess i was resisting the idea that in order to truly love someone you have to truly know them completely. i don't like that. a lot of this-- a lot of this b