Basil of Caesarea
Patristic
c. A.D. 330–379
“(Reg. fus. tract. 16–19.) Now it is plain that the rule of abstinence is necessary, because the Apostle mentions it among the fruits of the Spirit. (Gal. 5:23.) For the subjection of the body is by nothing so obtained as by abstinence, whereby, as it were a bridle, it becomes us to keep in check the fervour of youth. Abstinence then is the putting to death of sin, the extirpation of passions, the beginning of the spiritual life, blunting in itself the sting of temptations. But lest there should be any agreement with the enemies of God, we must accept every thing as the occasion requires, to shew, that to the pure all things are pure (Tit. 1:15.), by coming indeed to the necessaries of life, but abstaining altogether from those which conduce to pleasure. But since it is not possible that all should keep the same hours, or the same manner, or the same proportion, still let there be one purpose, never to wait to be filled, for fulness of stomach makes the body itself also unfit for its proper functions, sleepy, and inclined to what is hurtful.”