These oppositions may be due to differences in the perceivers – different animals (Mode 1), different humans (Mode 2), the different senses of a single human (Mode 3), or the different conditions (such as healthy or sick, young or old) in which the perceiver approaches the object (Mode 4) – or to differences in the things perceived – different quantities (Mode 7) or different cultural mores (Mode 10) – or to differences in both of these – different positions of observation (Mode 5), different mixtures (in the objects perceived and in the bodies of the perceivers) (Mode 6), or different
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