I'd argue that precisely the converse is true: A book contains intelligence (as do all things), but it cannot actively communicate it.

Maybe the intelligence/knowledge debate needs to be had, where:

1. intelligence implies the autonomy to act on knowledge

2. knowledge is the derivative of intelligent action

So you could argue ChatGPT is AGK: artificially generally knowledgeable. And then of course we can restrict books to being "knowledgeable" entities rather than overloading the term "intelligence".