“However, as Ferrucci states, journeys into the Inner Worlds are not without their own dangers, even into the higher ones.
‘Intense spiritual stimulation may bring inspirations, but may also penetrate directly into the lower conscious, where it throws light on and excites demons, instinctual energies, forgotten memories, and so on. These then tend to rise to consciousness, causing all sorts of trouble to the surprised conscious personality. When the demons are thus aroused, the contrast between different sides of our nature is felt with particular intensity.'” [via]