The Preface to the original edition of Singer's The Expanding Circle is included in the 2011 edition of the same work. The original Preface is the chapter after the 2011 Preface. Besides noting the truism that "religion no longer provides a satisfactory answer to the puzzle about the nature of morality", the original Preface adds zilch to the enlightenment gained by reviewing the 2011 Preface.
LIBERTARIAN BIOETHICS BLOG
Don Stacy is a 47 yo libertarian writer and physician. His articles have been published by multiple libertarian-themed websites. He practices medicine as a radiation oncologist in Hazard, KY.