Philipp. a SS. Trinitate, Theolog. Mystic. par. 2, tr. 3, disc. iv., art. 8: "Quamvis in principio visiones a dæmone fictæ aliquam habeant pacem ac dulcedinem, in fine tamen confusionum et amaritudinem in anima relinquunt; cujus contrarium est in divinis visionibus, quæ sæpe turbant in principio, sed semper in fine pacem animæ relinquunt." St. John of the Cross, Spiritual Canticle, st. 14, p. 84: "In the spiritual passage from the sleep of natural ignorance to the wakefulness of the supernatural understanding, which is the beginning of trance or ecstasy, the spiritual vision then revealed makes the soul fear and tremble."