There's a lot of people who avoid conversations about religion, especially if they think someone will try to 'convert' them. Edit: "doctor for souls" might invite "what do you mean?"
If I'm avoiding conversations with religious people, you can be certain I'm avoiding them with people who claim to be a doctor of souls though. He sounds like he wants to vivisect me rather than just convert me!
He is trying to improve his bedside manner. It's an ongoing effort. :)