Subject
- Metaphysics--Early works to 18008
- Philosophy -- Early works to 18005
- Medicine--Early works to 18004
- Astronomy--Early works to 18002
- Prayer -- Early works to 18002
- Theology2
- Astrology--Early works to 18001
- Biographies1
- Ethics -- Early works to 18001
- Psychology -- Early works to 18501
- Sufism--Early works to 18001