I found this the most dense of all Freire's text, though it's certainly worth the effort, because I also found some passages to be the most powerful of his that I've read (and some of them were also the most problematic...). Sociologists will find this book particularly interesting (Bourdieu is referenced out-right, and I drew some connections b/tween Freire's ghosts and Avery Gordon's hauntings).

Make sure to read Giroux's intro.