Sentiency or psychic matter (mind-stuff), to begin with, is in some respects like the _tabula rasa_ of the empiricists. It is the possibility—but the real possibility—of intelligence rather than intelligence itself. It is the monotonous undifferentiated inwardness—a faint self-awareness and self-realisation of the material world, but at first a mere vague _psychical protoplasm_ and without defined nucleus, without perceptible organisation or separation of structures. If there is self-awareness, it is not yet discriminated into a distinct and unified self, not yet differentiated and integrated,—soul in the condition of a mere “Is,” which, however, is nothing determinate. It is very much in the situation of Condillac’s statue-man—_une statue organisée intérieurement comme nous, et animée d’un esprit privé de toute espèce d’idées_: alike at least so far that the rigid uniformity of the latter’s envelope prevents all articulated organisation of its faculties. The foundation under all the diversity and individuality in the concrete intelligent and volitional life is a common feeling,—a _sensus communis_—a general and indeterminate susceptibility to influence, a sympathy responsive, but responsive vaguely and equivocally, to all the stimuli of the physical environment. There was once a time, according to primitive legend, when man understood the language of beast and bird, and even surprised the secret converse of trees and flowers. Such fancies are but the exaggeration of a solidarity of conscious life which seems to spread far in the sub-conscious realm, and to narrow the individual’s soul into limited channels as it rises into clear self-perception, “As thro’ the frame that binds him in His isolation grows defined.”