Avicenna: Epistemology and the Ten Intellect

He began his studies in medicine at the age of thirteen, memorised the Quran at the age of 10. He became a distinguished physician and his medical expertise brought him to the attention of the Sultan of Bukhara and whom he treated successfully for a serious infection. As reward, he asked only that he be given permission to use the sultan's library and its rare manuscripts, allowing him to continue his research.