Abū ‘Alī al-Ḥusayn ibn ‘Abd Allāh ibn Sīnā, known as Abū Alī Sīnā (Persian: ابوعلی سینا‎) or, more commonly, Ibn Sīnā (Arabic: ابن سینا‎), but most commonly known in English by his Latinized name Avicenna (Greek: Aβιτζιανός, Abitzianos), (c. 980 - 1037) was a Persian polymath and the foremost physician and philosopher of his time. He was also an astronomer, chemist, geologist, paleontologist, Hafiz, psychologist, Islamic scholar, Islamic theologian, logician, mathematician, Maktab teacher, physicist, poet, and scientist. He was also the director of a Bimaristan hospital and the dean of a medical school.