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Al-Biruni

Abu Rayhan al-Biruni was a scholar from Khwarazm in Central Asia who worked in astronomy, mathematics, geography, chronology and the study of religions. Attached…

أبو الريحان البيروني

Also known as Abu Rayhan al-Biruni, Alberonius

973 – c. 1050 · Khwarazm (Kath), Gurganj, Ghazni, northwestern India

Traditions: Islamic

Abu Rayhan al-Biruni was a scholar from Khwarazm in Central Asia who worked in astronomy, mathematics, geography, chronology and the study of religions. Attached to the court of Mahmud of Ghazni, he travelled into India, learned Sanskrit and wrote a detailed account of Indian philosophy, science and religion. His method of reporting another tradition from its own texts, with care about sources and without polemic, makes him an early model for assessing testimony across cultures.

Key ideas

  • A tradition should be described from its own sources and in its own terms before it is judged.
  • Reports must be weighed by the reliability of their transmitters and checked against observation where possible.
  • Comparing calendars, measurements and doctrines across peoples is a route to knowledge.
  • Observation and calculation can test and correct inherited claims about the natural world.

Major works

  • al-Āthār al-bāqiya ʿan al-qurūn al-khāliya (The Chronology of Ancient Nations, c. 1000)
  • Taḥqīq mā li-l-Hind (Kitāb al-Hind, on India, c. 1030)
  • al-Qānūn al-Masʿūdī

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The questions of philosophy where Al-Biruni takes a place, from The Coordinates of Thought.