Using rational/analytical thinking to combat the scientism/physicalism/"skepticism"/rationalism/anti-spiritualism that so many people hold and believe is the natural result of rational/analytical thinking. I believe Iain McGilchrist and Rupert Sheldrake are also passionate about this. It's really rare, though. Most open-minded spiritualists aren't rational/analytical-thinking enough to tackle the problem and probably don't give it much thought anyway.