Complex sentence: Many of Thurston's articles show a skeptical attitude towards popular legends about the lives of the saints and about holy relics and his treatment of spiritualism and the paranormal was regarded as "too sympathetic" by some sections of the Catholic community.
Split into simpler sentences: Many of Thurston's articles show a skeptical attitude towards popular legends about the lives of the saints and about holy relics. On the other hand, his treatment of spiritualism and the paranormal was regarded as "too sympathetic" by some within the Catholic community.