That which men desire, they are also said to “love”: and to “hate” those things for which they have aversion. So that desire and love are the same thing; save that by desire, we always signify the absence of the object; by love most commonly the presence of the same. So also by aversion, we signify the absence; and by hate, the presence of the object.

Of appetites and aversions, some are born with men; as appetite of food, appetite of excretion, and exoneration, which may also and more properly be called aversions, from somewhat they feel in their bodies; and some other appetites, not many. The rest, which are appetites of particular things, proceed from experience, and trial of their effects upon themselves or other men. For of things we know not at all, or believe not to be, we can have no further desire than to taste and try. But aversion we have for things, not only which we know have hurt us, but also that we do not know whether they will hurt us, or not.