How would you account for Captain Beatty's ability to qoute extensively from literature?

In my opinion, it is very clear that Captain Beatty has
read a lot of literature and must really care about it.  I think it would be very hard
to learn the books well enough to quote from them like he does unless you really like
the books.

What I assume is that some few people are
allowed to (or maybe required to) read the books so that they have some idea as to what
they are fighting against.  They need to know the enemy so they can fight it more
effectively.

So I think Beatty started doing that but then
kind of went over to the other side -- he started caring about the
books.