|When the sultan of Bukhara fell ill with an ailment that baffled the court physicians, Avicenna was called to his bedside and cured him||However, the preparation was either inadvertently or intentionally altered by an attendant to include five measures of active ingredient instead of the prescribed two|
|Avicenna began his prodigious writing career at age 21||Mathematics is divided into four principal sciences: numbers and arithmetic, geometry and geography, astronomy, and music|
In: Ferri's Practical Guide: Fast Facts for Patient Care.
|Thus, their cultural beliefs were remote from those of the 20th-century West and those of their Hellenistic predecessors||Since science was equated with wisdom, Avicenna attempted a broad unified classification of knowledge|
|He was particularly noted for his contributions in the fields of Aristotelian philosophy and medicine|
He treated himself by employing the heroic measure of eight self-administered celery-seed enemas in one day.30