I can sell my house, the things I make, and the services I provide. So why can’t I sell one of my kidneys? What is the philosophical basis for the taboo against selling parts of our bodies? There is an (illegal) market in body parts; shouldn’t we trust the wisdom of the market and make it legitimate? Or would doing so undermine the very dignity of persons and human life? Ken and John dissect the issues with Stanford Philosopher Debra Satz, author of Why Some Things Should Not Be for Sale: On The Limits of Markets.