Robert M. Martin is Professor of Philosophy at Dalhousie University, Nova Scotia, Canada. He has authored several books on philosophy, including The Philosopher’s Dictionary.
Richard Aspel is a talented narrator of children's and adult audiobooks. He trained and worked in London, before returning to Australia where he has worked extensively in television, theatre and radio. His television credits include Neighbours and Carson's Law, and he provided various voices for The Silver Brumby animated series. Richard was nominated for the prestigious Audie Award (US) for his narration of The Mark of the Angel by Nancy Huston.