 Porter's colleague at McMaster Divinity College, Gordon L. Heath, also produced a paper called "Neither Scholarly or a Solution" which offers a critique of the book.The author concedes he agrees with Harpur on several points such as their shared aversion to rigid fundamentalism and that the church has done shameful things in the past, but disagrees on most other points.In 2009, theologian and author Robert M. Price wrote a review which raised a number of concerns about Harpur's premise and evidence.