From the outside a soul may appear to be healthy, while within, in the depths of consciousness, it may suffer from some hidden sickness. It can be healed from the outside through being pierced by reproof, and from within through the renewal of the intellect. Whoever, then, rejects such reproof, and shamelessly continues to lie on his bed in the sickroom of lethargy, is a fool.

—Ilias the Presbyter