Avicenna - The Canon of Medicine - The unbalanced mind
Type of Spiritual Experience
A description of the experience
Avicenna (1999). The Canon of Medicine (al-Qānūn fī'l-ṭibb), vol. 1. Laleh Bakhtiar (ed.), Oskar Cameron Gruner (trans.), Mazhar H. Shah (trans.). Great Books of the Islamic World
In addition to the signs of the normal temperament already given, there are: Mental faculties including: vigor of imagination, intellectual power, and memory.
..if there is non-uniformity of temperament among the members; or, perchance, the principal members depart from equability and come to be of contrary temperament, one deviating towards one, another to its contrary or if the components of the body are out of proportion, it is unfortunate both for talent and reasoning power.