And let me here refer again to the fact, to which I have already drawn attention, that this instinct of the mind recognizing an external Master in the dictate of conscience, and imaging the thought of Him in the definite impressions which conscience creates, is parallel to that other law of, not only human, but of brute nature, by which the presence of unseen individual beings is discerned under the shifting shapes and colours of the visible world. Is it by sense, or by reason, that brutes understand the real unities, material and spiritual, which are signified by the lights and shadows, the brilliant ever-changing calidoscope, as it may be called, which plays upon their _retina_? Not by reason, for they have not reason; not by sense, because they are transcending sense; therefore it is an instinct. This faculty on the part of brutes, unless we were used to it, would strike us as a great mystery. It is one peculiarity of animal natures to be susceptible of phenomena through the channels of sense; it is another to have in those sensible phenomena a perception of the individuals to which this or that group of them belongs. This perception of individual things, amid the maze of shapes and colours which meets their sight, is given to brutes in large measures, and that, apparently from the moment of their birth. It is by no mere physical instinct, such as that which leads him to his mother for milk, that the new-dropped lamb recognizes each of his fellow lambkins as a whole, consisting of many parts bound up in one, and, before he is an hour old, makes experience of his and their rival individualities. And much more distinctly do the horse and dog recognize even the personality of their masters. How are we to explain this apprehension of things, which are one and individual, in the midst of a world of pluralities and transmutations, whether in the instance of brutes or again of children? But until we account for the knowledge which an infant has of his mother or his nurse, what reason have we to take exception at the doctrine, as strange and difficult, that in the dictate of conscience, without previous experiences or analogical reasoning, he is able gradually to perceive the voice, or the echoes of the voice, of a Master, living, personal, and sovereign?