57. When men are not satisfied with what they need so as to remain alive but desire more, they enslave themselves to passions that disturb the soul, inflicting upon it thoughts and fantasies that what they have is inadequate. And just as tunics that are too large hinder runners in a race, so the desire for more than one needs does not allow one’s soul to struggle or to be saved. 

Anthony the Great: On the Character of Men and on the Virtuous Life: One Hundred and Seventy Texts
Philokalia