To the men and women of the Middle Ages the figure of Constantine loomed large over the fourth century. Born a pagan, he converted to Christianity and became the first Christian emperor, the convenor of councils, the defender of orthodoxy, the builder of churches, the herald of a new age, the founder of Christian Europe. But to the men and women of the later fourth century, the generation of John Chrysostom, it was not Constantine, but Julian, raised a Christian only to forsake his “hereditary piety,” Julian the pagan emperor, Julianus Apostata, whose deeds were alive in their memory. The age of Constantine was part of past history, but Julian's actions, abortive as they may have appeared to later generations, were still remembered not only by the old, says John Chrysostom, but also by the “young people” of our day.