A relaxed professor who uses a very discussion-led method, which works well if you have good classmates. Really encourages everyone to talk/read/share. He very much values learning over grades, and so grading is rather relaxed. He clearly knows the subject super well and is very enthusiastic about it, but there'll be awkward silences if no one else is into it.
The readings are a huge part of the class. You could probably get by without doing them, but you'd get very little out of the course without them--the class is very much get out what you put in.
A side note: if you're not an astrology person, be prepared to sit through some Very Serious conversations of the effect-of-so&so's-star-sign.