Publisher's Synopsis
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 edition. Excerpt: ...dictum. I apprehend an individual sensum. The illusion consists in seeing a sensum of that quality in the grey piece of paper. But though the paper is not green the excitement produced in the corresponding places in the optic centre, part sensory, part intuitional, is the mental process which apprehends sensationally a green patch of that shape in that place.1 1 In the above I am omitting for the present illusions and other they are appearances in the mind itself. They are described later. I am dealing possible. here with illusions as to external things. We can see now how illusion is possible. The object, with which the mind is brought into compresence by virtue of an act initiated by itself, is transferred from its place in the world into a place to which it does not belong. The illusion is a transposition of materials. Moreover the form of the combination is also real. I see the grey patch green and believe it to be so. The actual intuited space of the grey patch is filled with green quality according to the universal pattern of the combination of qualities within the space of a substance, and the same account applies to all the kinds of illusion we have mentioned. We combine elements not really combined, but both the elements and their form of combination are features of the real world when that world is taken large enough. Sometimes the dislocation involved is more thoroughgoing still. In a rational dream I have not only appearances, but things which behave in the dream-space precisely as they would in reality. They obey physical laws and are thus physical, though apprehended only in idea. The dream may be a perfectly connected and coherent set of related things. The illusion of the dream consists in the disagreement of this world of...