Modifiers matching doctrine:

• christian,
• fundamental,
• common,
• religious,
• fundamentalist,
• traditional,
• crucial,
• foreign,
• basic,
• single,
• philosophical,
• eastern,
• larger,
• modern,
• esoteric,
• central,
• ascetic,
• important,
• comprehensive,
• new,
• critical,
• political,
• biblical,
• irrational,
• mystical,
• buddhist,
• theological,
• legal,
• secular,
• western,
• moral,
• catholic,
• major,
• ethical,
• key,

Simple categories matching philosophical:

• theme,
• liberalism,
• person,
• work,
• philosopher,
• poet,
• category,
• guru,
• writer,
• detective,
• economist,
• argument,
• concept,
• teaching,
• teacher,
• matter,
• singer,
• notion,
• naturalism,
• historian,
• intellectual,
• theory,
• communist,
• tradition,
• skepticism,
• logic,
• system,
• problem,
• subject,
• principle,
• revolutionary,
• composer,
• mathematician,
• monk,
• periodical,
• humorist,
• preacher,
• feminist,
• abstraction,
• speculation,
• recluse,
• general,
• guitarist,
• perception,
• tendency,
• topic,
• thought,
• works,
• heritage,
• discipline,
• phenomenology,
• movement,
• idea,
• belief,
• nature,
• conception,
• campaigner,
• determinism,
• exile,
• scepticism,
• position,
• values,
• issue,
• religion,
• study,
• ethics,
• science,
• scholar,
• opposition,
• novelist,
• consequence,
• development,
• doctrine,