종교를 철학적 관점으로 보고 감상문 같은 걸 써오는 게 과젠데 기독 불교는 너무 진부해서 이단종교를 한번 써보려고 하거든요

철학게 분들 중 이단에 대해서 쓰여진 책이나 영상 보신 것 중에 추천 해주실 만한게 있을까요?