STUART RACHELS is Associate Professor of Philosophy at the University of Alabama. He has revised several of James Rachels books, including Problems from Philosophy (second edition, 2009) and The Right Thing to Do (fifth edition, 2010), which is the companion anthology to this book. Stuart won the United States Chess Championship in 1989, at the age of 20, and he is a Bronze Life Master at bridge. His website is www.jamesrachels.org/stuart.