How do you define a witch? What’s the difference between a witch and a saint? And why was the Christian church so exercised by the idea of magic when Jesus said nothing about it at all (also, while we’re at it: note how much he said about money and how little about sex, and how, down the centuries, humans have obsessed about the sex practices of others and ignored their use of money, but I digress)? On Not Just the Tudors this week, in our continuing series on witchcraft, I speak to the esteemed