ahh, yes, ok. thank you for that quote - it gives opportunity to make an important clarification. that man and all the cosmos were in a state of incorruption is of course not due to their own makeup - God alone possesses these qualities in and of Himself. as St. Basil points out here, as beings coming into existence from non-existence, they are already beings rooted in change, in instability. in this sense all things are naturally mortal. but when we broaden our understanding of nature to include mode of existence then we see something different. then we see natural mortality being staved off by grace -- this is how St. Athanasius puts it about man - naturally mortal but sustained against this mortality by grace. creation does not naturally possess immortality in and of itself, but then again, it's natural job is to be a vessel of grace. man is even mortal in nature but yet receives grace and mediates it to all of creation. so while in the Hexaemeron St. Basil can speak about how the life of animals and plants naturally head towards death (for they are not the microcosm and mediator), in On the Origin of Man we can see that this mortality had no influence, no effect, no power, until nature divided against itself by cause of man's sin, and in this there is no contradiction.