metaphysic, the perception of matter is the absolutely elementary in cognition, the ne plus ultra of thought. Reason cannot get beyond, or behind it. It has no pedigree. It admits of no analysis. It is not a relation constituted by the coalescence of an objective and a subjective element. It is not a state or modification of the human mind. It is not an effect which can be distinguished from its cause. It is not brought about by the presence of antecedent realities. It is positively the First with no forerunner. The perception-of-matter is one mental word, of which the verbal words are mere syllables. We impose upon ourselves, and we also falsify the fact, if we take any other view of it than this. Thus speaks metaphysic, though perhaps not always with an unfaltering voice.
Psychology, or the science of the human mind, teaches a very different doctrine. According to this science, the perception of matter is a secondary and composite truth. It admits of being analysed into a subjective and an objective element, a mental modification called perception on the one hand, and matter per se on the other. It is an effect induced by real objects. It is not the first datum of intelligence. It has matter itself for its antecedent. Such, in very general terms, is the explanation of the perception of matter which psychology proposes.
Psychology and metaphysic are thus radically opposed to each other in their solutions of the highest problem of speculation. Stated concisely, the differ-
