But as for us men, our appetites prompt us on to the chase and pursuance of whatsoever is wanting to our natural temperament.
But now let us pass to the examination of the truth of the arguments that seem to favor the contrary opinion.

And for the first, I suppose that those meats that are palatable and of a quick and sharp taste do not beget in us an appetite, but rather bite and fret those parts that receive the nourishment, as we find that scratching the skin causes itching.

And supposing we should grant that this affection or disposition is the very thing which we call the appetite, it is probable that, by the operation of such kind of food as this, the nourishment may be made small, and so much of it as is convenient for Nature severed from the rest, so that the indigency proceeds not from the transmutation, but from the evacuation and purgation of the passages.
For sharp, tart, and salt things grate the inward matter, and by dispersing of it cause digestion, so that by the concoctions of the old there may arise an appetite for new.

Nor does the cessation of thirst after bathing spring from the different position of the passages, but from a new supply of moisture received into the flesh, and conveyed from thence to them also.

And vomiting, by throwing off whatever is disagreeable to Nature, puts her in a capacity of enjoying what is most suitable for her.