I’m going to review this in two parts, because there are two aspects that are worth calling out. The short summary: the book was very good, but I really disliked the narration.
The book’s content itself was quite good. This book provides a nice, gentle introduction to Stoicism through the lens of Seneca. The layout and format is well done, and it successfully introduces most of the key components of Stoicism. For someone new to stoicism, this book would be a top five recommendation from me to get introduced to the philosophy.
Next, is the narration. I really struggled with the narrator. The production was fine, with no repeated words or major errors that should have been edited out. My issue was with the speaking style and cadence of the narrator. Some people may find it fine, but it was really hard for me to listen to his choppy, stilted, staccato speech pattern. He also placed odd pauses and accentuation throughout his sentences that frequently did not fit the text at all. It reminded me at times of William Shatner as James Kirk on Star Trek (if a little less exaggerated).
Based on other reviews, the narrator may not be a problem for everyone. I highly recommend listening to a sample before purchasing the audiobook, however. Having gone through the whole thing here, in hindsight, I would have much preferred to read the dead tree version instead of listening to this.