ceiving subject and the object perceived a "sensible species" and an "intelligible species," Ockham considers these as superfluous machinery. Objects call forth sense-impressions in us, which are transmuted by the active intellect into mental images. These images are thus a product of the intellect, not species which flow from the object into the intellectus possibilis. The reality of these images is thus, in the modern use of the terms, not objective but subjective. This is true not merely of the "terms of first intention" formed directly from sense-impression, but also of the "terms of second intention," i.e., the abstract terms which take note of common attributes, or universals. These latter correspond to a tendency of the human mind, which can not perceive individuals without at the same time attempting to form a general concept. A white object simultaneously suggests abstract whiteness; an extended, related, enduring object forces the conception of extension, relation, duration. The result of this line of reasoning is the absolute subjectivity of all concepts and universals and the limitation of knowledge to the mind and its concepts-although these are real entities because of their subjective existence in the mind, reproducing the actual according to the constitution of the mind. Thus Ockham is really the pioneer of modern epistemology. The mysterious universals with their species in the sense of objective realities are abolished. Objects work upon the senses of men, and out of these operations the active intellect frames its concepts, including the so-called universals, which, while they are in themselves subjective, yet correspond to objective realities. By the statement that science has nothing to do directly with things, but only with concepts of them, the theory of knowledge assumes vital import for the progress of science, and a new method of scientific cognition is made available. Of course this increases the difficulty of...
