Complex sentence: At many points the narrative first-person voice of the main character waxes eloquent on a variety of topics, but none so much or with such enthusiasm as the subject of the poor state of "Christian" Europe of the time.
Split into simpler sentences: At many points the narrative, first-person voice of the main character waxes eloquent. A variety of topics are discussed, but none so much or with such enthusiasm as the subject of the poor state of "Christian" Europe of the time.