Tertullian

“ Anyhow, wherever abstinence from wine is either exacted by God or vowed by man, there let there be understood likewise a restriction of food fore-furnishing a formal type to drink. For the quality of the drink is correspondent to that of the eating. It is not probable that a man should sacrifice to God half his appetite ”

“ I return to Daniel and his brethren, preferring as they did a diet of vegetables and the beverage of water to the royal dishes and decanters, and being found as they were therefore “more handsome” (lest any be apprehensive on the score of his paltry body, to boot!) , besides being spiritually cultured into the bargain. [1] For God gave to the young men knowledge and understanding in every kind of literature, and to Daniel in every word, and in dreams, and in every kind of wisdom ”

“ This principal species in the category of dietary restriction may already afford a prejudgment concerning the inferior operations of abstinence also, as being themselves too, in proportion to their measure, useful or necessary. For the exception of certain kinds from use of food is a partial fast. ”