Here science adopts precisely the same views, and follows precisely the same method. Man objectises himself as "the human mind," and declares that the only fact, or at least that the sum total of all the facts appertaining to this object, is that it is visited by certain changes constituting its varieties of "feeling," "passion," "states of mind," or by whatever other name they may be called, and that the only legitimate business of science here is to observe these changes and classify them.
This makes the matter very simple. The analogy between mind and matter seems to be as complete as could be wished, and nothing appears to stand in the way of the establishment of kindred sciences of the two founded upon this analogy. But let us look into the subject a little more closely; and not to rush hastily into any difficulties without a clue, let us commence with certain curious verbal or grammatical considerations which lie on the very surface of the exposition given of the usual scientific procedure, as applied both to nature and to man. A phenomenon breaking through the surface of language, and startling our opinions out of their very slumbers, makes its appearance, we may be sure, not without authentic credentials from some deeper source; and if we attend to them we may be assisted in rectifying our hasty views of truth, or in correcting errors that we may have overlooked by reason of the very obviousness and boldness with which they came before us. First, however, it is to be premised that the reader must
