Know thou that the soul of man is exalted above, and is
independent of all infirmities of body or mind. That a sick person showeth
signs of weakness is due to the hindrances that interpose themselves between
his soul and his body, for the soul itself remaineth unaffected by any bodily
ailments. Consider the light of the lamp. Though an external object may
interfere with its radiance, the light itself continueth to shine with
undiminished power. In like manner, every malady afflicting the body of man is
an impediment that preventeth the soul from manifesting its inherent might and
power.
- Baha’u’llah (‘Gleanings from the Writings of Baha’u’llah’)