From Saint Isaac the Syrian
"Good and evil deeds are the offspring of freedom. Where freedom is lacking, the doing of [good and evil] deeds is superfluous with respect to receiving a recompense. There is no recompense for what is natural. A reward is bestowed for a conflict, and one does not speak of a victory where there is no struggle. When opposition is taken away, freedom also vanishes with it. Henceforth nature has no more struggle."
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