Want to find title of scifi book/short story
A while back an old co-worker was talking about a book where an inventor creates two empathic books which evolve as the reader reads them. One of the books was for his daughter but apparently it is stolen. I don't really remember anything else other than the fact about empathic books and how the story is different for every reader(or something like that). The plot delves into artificial intelligence. Publishing date circa 1980s or earlier but definitely not something recent. Would love to know the title. Thanks!