The good and eatable fish are separated by the fishers' skill from the bad and poisonous fish, so that the enjoyment of the good should not be spoilt… - Gregory of Nyssa

When it comes to the insightful reading of such passages that comes via the elevated sense, we shall not beg to differ at all about its name—whether one wishes to call it tropologia, allegoria, or anything else—but only about whether it contains meanings that are beneficial.

The habit which many have got into must be as far as possible corrected; those, I mean, who while they fight strenuously against the baser pleasures, yet still go on hunting for pleasure in the shape of worldly honour and positions which will gratify their love of power. They act like some domestic who longed for liberty, but instead of exerting himself to get away from slavery proceeded only to change his masters, and thought liberty consisted in that change. But all alike are slaves, even though they should not all go on being ruled by the same masters, as long as a dominion of any sort, with power to enforce it, is set over them.

Evil will come to nought and will be completely destroyed. The divine, pure goodness will contain in itself every nature endowed with reason; nothing made by God is excluded from his kingdom once everything mixed with some elements of base material has been consumed by refinement in fire.