in seeing or imagining the process must be different from your state when the process itself is passing, since the modes of apprehension are so different. There may be every ground for concluding that a logical process has its correlative physical process, and that the two processes are merely two aspects of one event; but because we cannot apprehend the one aspect as we apprehend the other, cannot _see_ the logical sequence as we _see_ the physical sequence, this difference in our modes of apprehension compels us to separate the two, assigning one to the subjective, the other to the objective class. Between the sensible perception of an object and the reproduced image of the object there is chiefly a quantitative difference in the physiological and psychological processes: the image is a faint sensation. Yet this quantitative difference brings with it the qualitative distinction which is indicated in our calling the one a sensation, the other a thought. The consequence has been that while all philosophers have admitted the sensation to be--at least partly--a process in the bodily organism, the majority have maintained that the thought is no such process in the organism, but has its seat in a spirit independent of the organism. 47. The states of Feeling which are associated with other states characterized as objective because overtly referring to a Not-Self, we group under the head of Matter: we assign material conditions as their antecedents. Whereas states of Feeling which are not thus associated we group under the head of Mind, and assign internal conditions as their antecedents. Color and Taste are very different states of Feeling, yet both are spontaneously referred to external causes, because they are associated with visual and tactical states; whereas Hunger, Nausea, Hope, etc., have no such associations, and their material conditions are only theoretically assigned.