Francis would have been the first to call himself just a guy in a robe. I’m an atheist and don’t find it difficult to listen to people of all faiths put forward moral philosophy, and I can identify parts that I agree with even if I might disagree that there is any supernatural basis for them. There’s a wide world of thought available that is simply outside the remit of science, and there is a lot to be gained from listening to people who have spent their lives dedicated to that domain, even if some of it is wrong, and even if none of it is founded in peer-reviewed academic papers.