There are three kinds of nature in man, as Nicetas Stethatos further explains: the carnal man, who wants to live for his own pleasure, even if it harms others; the natural man, who wants to please both himself and others; and the spiritual man, who wants to please only God, even if it harms himself. The first is lower than human nature, the second is normal, the third is above nature; it is life in Christ.

Way of the Ascetics: The Ancient Tradition of Discipline and Inner Growth (ed. St Vladimir's Seminary Press, 1982) - ISBN: 9780881410495