Appetition
Encyclopedia
Appetition, or appetite, is one of the two aspects of desire
Desire (philosophy)
In philosophy, desire has been identified as a philosophical problem since Antiquity. In Plato's The Republic, Socrates argues that individual desires must be postponed in the name of the higher ideal....

, the other being volition
Volition
Volition may refer to:*Volition , the cognitive process by which an individual decides on and commits to a particular course of action...

.

Aristotle
Aristotle
Aristotle was a Greek philosopher and polymath, a student of Plato and teacher of Alexander the Great. His writings cover many subjects, including physics, metaphysics, poetry, theater, music, logic, rhetoric, linguistics, politics, government, ethics, biology, and zoology...

makes the distinction as follows:
Everything, too, is pleasant for which we have the desire within us, since desire is the craving for pleasure. Of the desires some are irrational, some associated with reason. By irrational I mean those which do not arise from any opinion held by the mind. Of this kind are those known as ‘natural’; for instance, those originating in the body, such as the desire for nourishment, namely hunger and thirst, and a separate kind of desire answering to each kind of nourishment; and the desires connected with taste and sex and sensations of touch in general; and those of smell, hearing, and vision. Rational desires are those which we are induced to have; there are many things we desire to see or get because we have been told of them and induced to believe them good.
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