Justinian the Great

“Theology without practice is the theology of demons”
― Maximus the Confessor

“But this is what leads the heretics astray: that they look upon nature and person as the same thing”
― John of Damascus

“The three most ancient opinions concerning God are Anarchia, Polyarchia, and Monarchia. The first two are the sport of the children of Hellas, and may they continue to be so. For Anarchy is a thing without order; and the Rule of Many is factious, and thus anarchical, and thus disorderly. For both these tend to the same thing, namely disorder; and this to dissolution, for disorder is the first step to dissolution. But Monarchy is what we hold in honor.”
― Gregory Nazianzus

“The soul in its nature loves God and longs to be at one with Him in the noble love of a daughter for a noble father; but coming to human birth and lured by the courtships of this sphere, she takes up with another love, a mortal, leaves her father and falls.”
― Plotinus, The Enneads