Also known as the "Era of Dreams" and The First Age"
From the introduction in Book One: Lands of Creation.
"At the height of the First Age, Creation was a much larger and more advanced place than it is in the fallen Age of Sorrows. The Solar Princes of the Earth have had millennia to expand the world's borders and apply their unrivaled genius to its governance and magitechnical advancement. As a result,the Era of Dreams is a time of peace and prosperity beyond the wildest imaginings of Second Age folk.
All is not perfect in this time of miracles, however. The Great Curse has taken root in the hearts of the Celestial Exalts, leading the Chosen to acts of hubris and barbarism on a scale just as grand as all their other acts, threatening the very survival of Creation itself."