Desire that has its origins in the mind is the source of dark passions. And when the soul is engrossed in such desire, she forgets her own nature, that she is the breath of God, and so she is carried away into sin in her folly, not considering the evils that she will suffer after death.
Godlessness and the love of praise are the worst and most incurable disease of the soul and lead to her destruction. The desire for evil signifies a lack of what is good. Goodness consists in doing with all our heart whatever is right and pleasing to the God of all. –St Antony the Great ‘The Philokalia’