Tertullian

Every soul, then, by reason of its birth, has its nature in Adam until it is born again in Christ; moreover, it is unclean all the while that it remains without this regeneration; and because unclean, it is actively sinful, and suffuses even the flesh (by reason of their conjunction) with its own shame. Now although the flesh is sinful, and we are forbidden to walk in accordance with it, and its works are condemned as lusting against the spirit, and men on its account are censured as carnal, yet the flesh has not such ignominy on its own account.