Title: Naẓar-i mutafakkirān-i Islāmī dar bārah-ʼi ṭabīʻat
Subjects: Islamic cosmology, Ikhwān al-Ṣafāʼ
People: Muḥammad ibn Aḥmad Bīrūnī (973?-1048), Avicenna (980-1037)