Alan Weber Doha, Qatar    Ibn Sīnā (980–1037 CE) Sifting through literature we recover strange grains of medical truth.  The twelfth century poet Nizámí-i-‘Arúdí relates the following story about the celebrated physician Ibn Sīnā or Avicenna (980–1037 C.E.): One of the princes of the House of Búya was attacked by melancholy, and was in such…