Abba Serapion, similar to his predecessor Evagrius, taught that there are eight principle vices (5.2-3):1) Gluttony - natural vice committed through bodily action
2) Fornication - natural vice committed through bodily action
3) Avarice (love of money) - unnatural vice caused by external circumstances
4) Anger - natural vice caused by external circumstances
5) Sadness - unnatural vice caused by internal circumstances
6) Acedia (anxiety of heart) - unnatural vice caused by internal circumstances
7) Vainglory - unnatural vice committed in thoughts apart from bodily action
8) Pride - unnatural vice committed in thoughts apart from bodily action
