New Age thought typically envisions the world as developing through cosmological cycles that can be identified astrologically. It adopts this concept from Theosophy, although often presents it in a looser and more eclectic way than is found in Theosophical teaching. New Age literature often claims that humanity once lived in an age of spiritual wisdom. In the writings of New Agers like Edgar Cayce, the ancient period of spiritual wisdom is associated with concepts of supremely-advanced societies living on lost continents such as Atlantis, Lemuria, and Mu, as well as the idea that ancient societies like those of Ancient Egypt were far more technologically advanced than modern scholarship accepts. New Age literature often posits that the ancient period of spiritual wisdom gave way to an age of spiritual decline, sometimes termed the Age of Pisces. Although characterised as being a negative period for humanity, New Age literature views the Age of Pisces as an important learning experience for the species. Hanegraaff stated that New Age perceptions of history were "extremely sketchy" in their use of description, reflecting little interest in historiography and conflating history with myth. He also noted that they were highly ethnocentric in placing Western civilization at the centre of historical development.