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Shiavault - a Vault of Shia Islamic Books A Guide To Locke's Essay Hedonistic Motivations In Locke's second-edition treatment of the issue, these causes are clear: human volition is a mental preference that is invariably determined by the greatest present uneasiness attendant upon desire.
The presence of pain and the absence of pleasure now, along with the anticipation of either in the future, induce in us a feeling of uneasiness that can be satisfied only by removing the pain or achieving the pleasure.
Although we commonly experience many such desires at the same time, each proportional to the degree of pleasure or pain and the likelihood of its production, one among them always overcomes all of the others, and this most pressing uneasiness is the one that determines the will to act in such a way as to resolve it.
[Essay II xxi 29-32] If human agents were ever perfectly content in every respect, Locke supposed, they would have no volition and take no action; lacking nothing, they would experience none of the uneasiness that expresses itself in a desire that determines the will to produce a change of circumstances. Thus, the recurrent uneasinesses of hunger and thirst are providential provisions for our survival because they determine our wills toward eating and drinking.
Since each uneasiness is experienced as an obstacle to the achievement of happiness, desire for its removal determines the will unless there is another source of uneasiness that overcomes it. [Essay II xxi 34-36] According to Locke, the simple ideas of pleasure and pain invariably accompany all of our other perceptions, as the delight or uneasiness we experience along with contemplation of every sensory and reflective object of thought.
This is a significant provision for the conduct of life, since our native desire for happiness and aversion to misery are thereby guided in determining our wills toward certain thoughts and actions and away from others. This is why we eat good-tasting food and don't burn ourselves on hot stoves. What is more, Locke supposed that our experience of varying degrees of pleasure and pain not only serves us well in this life but also engenders our hope of a better life hereafter.
[Essay II vii 1-6] It even provides us with some confidence about the real existence of the external world, since the immediate perception of pleasure and pain is the kind of experience whose involuntary insistence communicates most surely its origin in a source outside ourselves.