45. Hence, to worthy men, abstinence in food, and in corporeal enjoyments and actions, is more appropriate than abstinence in what pertains to the touch; because though, while we touch bodies, it is necessary we should descend from our proper manners to the instruction of that which is most irrational in us; yet this is still more necessary in the assumption of food. For the irrational nature is incapable of considering what will be the effect of it, because this part of the soul is essentially ignorant of that which is absent. But, with respect to food, if it were possible to be liberated from it, in the same manner as from visible objects, when they are removed from the view; for we can attend to other things when the imagination is withdrawn from them;—if this were possible, it would be no great undertaking to be immediately emancipated from the necessity of the mortal nature, by yielding, in a small degree, to it. Since, however, a prolongation of time in cooking and digesting food, and together with this the co-operation of sleep and rest, are requisite, and, after these, a certain temperament from digestion, and a separation of excrements, it is necessary that the tutor of the boy within us should be present, who, selecting things of a light nature, and which will be no impediment to him, may concede these to nature, in consequence of foreseeing the future, and the impediment which will be produced by his permitting the desires to introduce to us a burden not easily to be borne, through the trifling pleasure arising from the deglutition of food. 46. Reason, therefore, very properly rejecting the much and the superfluous, will circumscribe what is necessary in narrow boundaries, in order that it may not be molested in procuring what the wants of the body demand, through many things being requisite; nor being attentive to elegance, will it need a multitude of servants; nor endeavour to receive much pleasure in eating, nor, through satiety, to be filled with much indolence; nor by rendering its burden [the body] more gross, to become somnolent; nor through the body being replete with things of a fattening nature, to render the bond more strong, but himself more sluggish and imbecile in the performance of his proper works. For, let any man show us who endeavours as much as possible to live according to intellect, and not to be attracted by the passions of the body, that animal food is more easily procured than the food from fruits and herbs; or that the preparation of the former is more simple than that of the latter, and, in short, that it does not require cooks, but, when compared with inanimate nutriment, is unattended by pleasure, is lighter in concoction, and is more rapidly digested, excites in a less degree the desires, and contributes less to the strength of the body than a vegetable diet.