This is a next-generation textbook that teaches the art and practice of comparison as a vital and necessary skill in our modern globalizing world. By acknowledging up front and then working with the very real spiritual, social, and emotional impact such a practice can have on individuals through a model “initiatory” structure, the textbook provides the individual reader or classroom community that chooses to take up this practice with an effective map and a clear three-part process. The intent here, then, was to create a kind of “textbook initiation” that could guide, inspire, and challenge those who wish to think seriously about religious pluralism in the modern world, from the new student coming to these materials for the first time to seasoned professionals who seek to engage the comparative method anew. Students, journalists, medical, legal, business, media, and military professionals, religious leaders, social workers and activists, psychotherapists, or the simply curious—all of these were, and are, my intended conversation partners here. I am presently writing a second edition of this book, adding two more chapters, correcting errata, and updating the text to reflect the most current scholarship.