The Book of Healing (Arabic: کتاب الشفاء Kitab Al-Shifaʾ, Latin: Sufficientia) is a scientific and philosophical encyclopedia written by Abū Alī ibn Sīnā (Avicenna) from ancient Persia, near Bukhara in Greater Khorasan. Despite its English title, it is not concerned with medicine. Also called The Cure it is intended to "cure" or "heal" ignorance of the soul.This book is Ibn Sina’s major work on science and philosophy. He probably began to compose the al-Shifa in 1014, completed it around 1020, and published it in 1027.