It is also well to note that to adduce the reasons, the laws, the causes of things and of reality, is equivalent to establishing concepts, and since the word "concepts" has been applied in turn to pure and to empirical and abstract concepts, laws and causes have been alternately described as truths and as fictions. It belongs to the discussion of terminology to remark that in general the word "reason" has been used only for researches into pure and abstract concepts, "cause" for empirical concepts, and "laws" almost equally for all three, but perhaps a little more for empirical and abstract than for pure concepts. But to the confusion of these three forms of spiritual products is to be attributed the fact that there have been discussions, as, for instance, whether there be concepts of laws in addition to concepts of things, the issue of which was at bottom the desire to ascertain whether there exist abstract and pure concepts, in addition to empirical concepts.

Intellect and Reason.

The profound diversity of the concepts and of the pseudoconcepts suggested (at the time when it was customary to represent the forms or grades of the spirit as faculties) the distinction between two logical faculties, which were called Intellect (or, also, abstract Intellect), and Reason. The first of these formed what we now call pseudoconcepts; the second, pure concepts.

The abstract intellect and its practical nature.

But the proper character of neither of the two faculties was realized by those who postulated them; they fell into the error, which we have already had occasion to criticize, of conceiving the Intellect as a form of knowledge, which either lives in the false, or is limited to preparing the material for the superior faculty, to which it supplies a first imperfect sketch of the concept. But the faculty required for this should be, not of a theoretical nature, but of a practical. It is a terminological question of slight interest, whether the name "Intellect" should be retained for the production of pseudoconcepts, or whether the purely theoretic meaning, which it first had, should be restored to it, and it should thus be made synonymous with "Reason." It can only be observed that it will be very difficult to remove henceforth from "Intellect," from "intellectual formations," and from "intellectualism," the suspicion and discredit cast upon them by the great philosophic history of the first half of the nineteenth century; so much so, that only where a rather popular style is employed, can Intellect and Reason be used promiscuously.

With greater truth, Reason was considered as unifying what the Intellect had divided, and therefore as unifying abstraction and concreteness, deduction and induction, analysis and synthesis. With greater truth, although complete exactness would have demanded here, not so much that to Reason should be given the power of unifying what has been unduly divided, as that to the Intellect, that is to say, to the practical faculty, should be given the power of dividing extrinsically what for Reason is never divided: a power which the Intellect, as a practical faculty, possesses and exercises, not in a pathological, but in a physiological way.

The synthesis of theoretic and practical, and the intellectual intuition.

The incomplete survey of the so-called Intellect, the theoretic character of which was preserved, though in a depreciatory sense, issued in the result that finally to Reason itself was attributed a character, no longer theoretic, or rather, more than theoretic. Knowledge, presenting itself in the form of Intellect, seemed inadequate to truth; to attain to which there intervened Reason, or speculative procedure, the synthesis of theory and practice, a knowledge which is action, and an action which is knowledge. Sometimes, Reason itself, thus transfigured, seemed insufficient, owing to the presence of ratiocinative processes, which came to it from the Intellect, and were absorbed by it; and the supreme faculty of truth was conceived, not as logical reasoning, but as intuition; an intuition differing from the purely artistic and revealing the genuine truth, an organ of the absolute, intellectual Intuition. It was urged against intellectual intuition that it created irresponsibility in the field of truth, and made lawful every individual caprice. But a similar objection could be brought against Reason, which is superior to knowledge, and is the synthesis of theory and practice: while, on the other hand, it cannot be denied, both of intellectual Intuition and of Reason, that on the whole they affirmed or tended to affirm the rights of the pure Concept, as opposed to empirical and abstract concepts.

Uniqueness of thought.

For our part, we have no need to lower the cognitive activity beneath the level of truth, by attributing to it an intellectualiste and arbitrary function; nor, on the other hand (in order to supplement knowledge and intellect thus pauperized), to exalt Reason above itself. Thought (call it Intellect, or Reason, or what you will) is always thought; and it always thinks with pure concepts, never with pseudoconcepts. And since there is not another thought beneath thought, so there is not another thought superior to it. The difficulties which led to these conclusions have been completely explained, when we have distinguished concepts from pseudoconcepts, and demonstrated the heterogeneity which exists between these two forms of spiritual products.