Kâtip Çelebi

Kâtip Çelebi or Ḥājjī Khalīfa was a Turkish polymath and author of the 17th-century Ottoman Empire. He compiled a vast universal bibliographic encyclopaedia of books and sciences, the Kaşf az-Zunūn, and wrote many treatises and essays. “A deliberate and impartial historian… of extensive learning”, Franz Babinger hailed him "the greatest encyclopaedist among the Ottomans."