I got divorced from my wife on June 6, 2006. Yeah, 6-6-06, which coincidentally, was when my wife turned into a demon spawned from Satan's anus. But for legal reasons, I have to call her, Kate.
The essence of man is his freedom. Sin is committed in that freedom. Sin can therefore not be attributed to a defect in his essence. It can only be understood as a self-contradiction, made possible by the fact of his freedom but not following necessarily from it.