Abu Sulayman Muhammad Sijistani, ( fa, ابوسلیمان سجستانی) also called al-Mantiqi (the Logician) (c. 912 – c. 985 CE), named for his origins in Sijistan or

Sistan Sistān ( fa, سیستان), known in ancient times as Sakastān ( fa, سَكاستان, "the land of the Saka"), is a historical and geographical region in present-day Eastern Iran ( Sistan and Baluchestan Province) and Southern Afghanistan ( ...

province in present-day Eastern

Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...

and Southern

Afghanistan Afghanistan, officially the Islamic Emirate of Afghanistan,; prs, امارت اسلامی افغانستان is a landlocked country located at the crossroads of Central Asia and South Asia. Referred to as the Heart of Asia, it is bordere ...

, became the leading

Persian Persian may refer to: * People and things from Iran, historically called ''Persia'' in the English language ** Persians, the majority ethnic group in Iran, not to be conflated with the Iranic peoples ** Persian language, an Iranian language of the ...

Islamic

humanist Humanism is a philosophical stance that emphasizes the individual and social potential and agency of human beings. It considers human beings the starting point for serious moral and philosophical inquiry. The meaning of the term "human ...

philosopher in

Baghdad Baghdad (; ar, بَغْدَاد , ) is the capital of Iraq and the second-largest city in the Arab world after Cairo. It is located on the Tigris near the ruins of the ancient city of Babylon and the Sassanid Persian capital of Ctesiphon. I ...

. Deeply religious, he regarded both religion and philosophy as valid and true, but separate, concerned with different issues, and proceeding by different means. He thus rejected the claims of the theologians employing

Ilm al-Kalam ''ʿIlm al-Kalām'' ( ar, عِلْم الكَلام, literally "science of discourse"), usually foreshortened to ''Kalām'' and sometimes called "Islamic scholastic theology" or "speculative theology", is the philosophical study of Islamic doc ...

as having built a theology "proved" by rationality and of the Brethren of Purity as offering a synthesis of philosophy and religion. His best-known work is ''Siwān al-Ḥikma'' "Vessel of Wisdom", a history of philosophy from the beginning to his own time.

References

Al-Sijistani, Abu Sulayman Muhammad
in Edward Craig (ed, 1998),

Routledge Encyclopedia of Philosophy The ''Routledge Encyclopedia of Philosophy'' is an encyclopedia of philosophy edited by Edward Craig that was first published by Routledge in 1998 (). Originally published in both 10 volumes of print and as a CD-ROM, in 2002 it was made availabl ...

vol. 8. .

References

Further reading