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| | Science of the mind? Qualia and objective versus subjective experience |
 | | Qualia are internal, subjective qualitative states such as the redness of red, aesthetic experiences of beauty and revulsion, pain, happiness, boredom, depression, elation, motivation, intention, the experience of understanding something for the first time, etc. Such states are subjective and private and are distinct (though causally related to) physical and neural activities. |
 | | The experimentally accessible processes, such as projection of images on the retina and the resultant neural firings etc, are describable in terms of manipulation of symbols (typically binary states such as fired/not fired, matrices of pixels or strings of pulses). |
 | | The immediate knowledge of the rose consists (among other things) of the qualia of red, green, and the smell of its perfume, not to mention the very immediate and unpleasant sensation I get when I attempt to pick it up by its thorny stem. |
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