"Since the goal of the virtuous way of life was the very thing we have been seeking, and this goal has been found in what we have said, it is time for you, noble friend, to look at that example and, by transferring to your own life what is contemplated through spiritual interpretation of the things spoken literally, to be known by God and to become his friend. This is true perfection, not to avoid a wicked life because like slaves we servilely fear punishment, nor to do good because we hope for rewards, as if cashing in on the virtuous life by some business-like and contractual arrangement. On the contrary, disregarding all those things for which we hope and which been reserved by promise, we regard falling from God's friendship as the only thing dreadful and we consider becoming God's friend the only thing worthy of honor and desire. This, as I have said, is the perfection of life."
St. Gregory of Nyssa,
The Life of Moses, Book 2, # 320