The context of the following conversation is Aubrey liked reading very much and always went home to read a few chapters every night.:
Aubrey says I love reading so much.  I always read a few chapters every night before bedtime..
The friend responds That's why you are a writer..
Aubrey responds I don't know where I would be without books.  They were my friends when I was growing up..
The friend responds Did you have any siblings?.
Aubrey responds I am the only child.  I had my books and toys.  They were my world..
The friend responds You have such an active imagination..