Jack Kornfield trained as a Buddhist monk in the monasteries of Thailand, India, and Burma. He is a founding teacher of the Insight Meditation Society in Barre, Massachusetts, and Spirit Rock Meditation Center in Woodacre, California, and has taught meditation internationally since 1974. His books include After the Ecstasy, the Laundry and The Art of Forgiveness, Lovingkindness, and Peace.
Patrick Echlin was a lecturer in the Department of Plant Sciences and Director of the Multi-Imaging Centre, School of Biological Science, University of Cambridge until he retired in 1999. He has taught for more than thirty years at the Lehigh University Microscopy School and is the author and co-auther of eight books on scanning electron microscopy and x-ray microanalysis. He is an Honorary Fellow of the Royal Microscopical Society and received the Distinguished Scientist Award in Biological Sciences from the Microscope Society of America in 2001.