This is a Pulitzer Prize winning book by
Douglas Hofstadter. Nominally, it is about
artificial intelligence. In practice, it is also about
number theory in
mathematics,
computer science,
cognitive science,
art,
recursion,
the mind-body problem,
logic,
biology,
philosophy,
physics,
literature,
psychology,
consciousness, and I am definitely leaving out stuff.
People in the know call this book the book that can't be described in adjectives.