The Middle Ages
Rather inevitably, dream theory revolved around strong religious influences. Under the grip of the church; they were seen to be the work of the devil which served to lead its dreamer into temptation through sleep. Dreams were seen to also be an indicator of the person’s moral status. Those who had dreams of power and success were seen to have a positive moral status, while those who dreamt of bad things were seen to be of questionable character. This era also saw a slight shift back to the Ancient Egyptian theory that dreams were a method in which God could communicate with humans. There were many examples of stories from the Bible in which dreams had played an important role in a person’s actions.