Portrait of persian AVICENNA (Ibn Sina, c.980 1037). Engraving from early 17th century. Besides philosophy and medicine, Avicenna's corpus includes writings on astronomy, alchemy, geography and geology, psychology, Islamic theology, logic, mathematics, physics and poetry.-PERSIA-Sharaf al-Mulk Hujjat al-Haq Sheikh al-Rayees Ibn-Sino (Abu Ali Abdulloh Ibn-Sino) Bu Ali Sina