Tatarize: "I'm Only On the Fifth Chapter."

A guy named Tatarize on the Atheism forum wrote this:
I'm part way through the book and already amazed. I thought the coolest thing in my copy would be Richard Carrier's signature. But, it's actually teaching me a lot about religion. It's the weirdest feeling. It's been years since one piece of media has seriously enlightened me on more than one or two topics. It's a rare gem to find something that dispels a misconception or suddenly clears up some issue, or corrects a mistake, or changes one's mind... but this book has already done all of those things and I'm only on the fifth chapter.
What book is he talking about? This one. That's very gratifying to know, thanks.