Doesn’t it take heat in addition to thirst to give it the extra feature of being desire for something cold, and cold to make it desire for something hot? Doesn’t it take a thirst which has been aggravated into becoming strong to produce the desire for a lot of drink, and doesn’t it take a weak thirst to produce the desire for a little drink? The actual state of being thirsty, however, cannot possibly be desire for anything other than its natural object, which is just drink; and the same goes for hunger and food.’
