Thinking in general is fed from two sources, firstly from subjective and in the last resort unconscious roots, and secondly from objective data transmitted through sense perceptions.
Extraverted thinking is conditioned in a larger measure by these latter factors than by the former, judgment always presupposes a criterion; for the extraverted judgment, the valid and determining criterion is the standard taken from objective conditions, no matter whether this be directly represented by an objectively perceptible fact, or expressed in an objective idea; for an objective idea, even when subjectively sanctioned, is equally external and objective in origin. Extraverted thinking, therefore, need not necessarily be a merely concretistic thinking it may equally well be a purely ideal thinking, if, for instance, it can be shown that the ideas with which it is engaged are to a great extent borrowed from without, i.e. are transmitted by tradition and education. The criterion of judgment, therefore, as to whether or no a thinking is extraverted, hangs directly upon the question: by which standard is its judgment governed — is it furnished from without, or is its origin subjective? A further criterion is afforded by the direction of the thinker's conclusion, namely, whether or no the thinking has a preferential direction outwards. It is no proof of its extraverted nature that it is preoccupied with concrete objects, since I may be engaging my thoughts with a concrete object, either because I am abstracting my thought from it or because I am concretizing my thought with it. Even if I engage my thinking with concrete things, and to that extent could be described as extraverted, it yet remains both questionable and characteristic as regards the direction my thinking will take; namely, whether in its further course it leads back again to objective data, external facts, and generally accepted ideas, or not. So far as the practical thinking of the merchant, the engineer, or the natural science pioneer is concerned, the objective direction is at once manifest. But in the case of a philosopher it is open to doubt, whenever the course of his thinking is directed towards ideas. In such a case, before deciding, we must further enquire whether these ideas are mere abstractions from objective experience, in which case they would merely represent higher collective concepts, comprising a sum of objective facts; or whether (if they are clearly not abstractions from immediate experience) they may not be derived from tradition or borrowed from the intellectual atmosphere of the time. In the latter event, such ideas must also belong to the category of objective data, in which case this thinking should also be called extraverted.
Although I do not propose to present the nature of introverted thinking at this point, reserving it for a later section, it is, however, essential that I should make a few statements about it before going further. For if one considers strictly what I have just said concerning extraverted thinking, one might easily conclude that such a statement includes everything that is generally understood as thinking. It might indeed be argued that a thinking whose aim is concerned neither with objective facts nor with general ideas scarcely merits the name ♦thinking*. I am fully aware of the fact that the thought of oui? age, in common with its most eminent representatives, knows and acknowledges only the extraverted type of thinking. This is partly due to the fact that all thinking which attains visible form upon the world's surface, whether as science, philosophy, or even art, either proceeds direct from objects or flows into general ideas. On either ground, although not always completely evident it at least appears essentially intelligible, and therefore relatively valid. In this sense it might be said that the extraverted intellect, i.e. the mind that is orientated by objective data, is actually the only one recognized.
There is also, however — and now I come to the question of the introverted intellect — an entirely different kind of thinking, to which the term I «thinking* can hardly be denied: it is a kind that is neither orientated by the immediate objective experience nor is it concerned with general and objectively derived ideas. I reach this other kind of thinking in the following way. When my thoughts are engaged with a concrete object or general idea in such a way that the course of my thinking eventually leads me back again to my object, this intellectual process is not the only psychic proceeding taking place in me at the moment. I will disregard all those possible sensations and feelings which become noticeable as a more or less disturbing accompaniment to my train of thought, merely emphasizing the fact that this very thinking process which proceeds from objective data and strives again towards the object stands also in a constant relation to the subject. This relation is a condition sine qua non, without which no thinking process whatsoever could take place. Even though my thinking process is directed, as far as possible, towards objective data, nevertheless it is my subjective process, and it can neither escape the subjective admixture nor yet dispense with it. Although I try my utmost to give a completely objective direction to my train of thought, even then I cannot exclude the parallel subjective process with its all-embracing participation, without extinguishing the very spark of life from my thought. This parallel subjective process has a natural tendency, only relatively avoidable, to subjectify objective facts, i.e. to assimilate them to the subject.
Whenever the chief value is given to the subjective process, that other kind of thinking arises which stands opposed to extraverted thinking, namely, that purely subjective orientation of thought which I have termed introverted. A thinking arises from this other orientation that is neither determined by objective facts nor directed towards objective data — a thinking, therefore, that proceeds from subjective data and is directed towards subjective ideas or facts of a subjective character. I do not wish to enter more fully into this kind of thinking here; I have merely established its existence for the purpose of giving a necessary complement to the extraverted thinking process, whose nature is thus brought to a clearer focus.
When the objective orientation receives a certain predominance, the thinking is extraverted. This circumstance changes nothing as regards the logic of thought — it merely determines that difference between thinkers which James regards as a matter of temperament. The orientation towards the object, as already explained, makes no essential change in the thinking function; only its appearance is altered. Since it is governed by objective data, it has the appearance of being captivated by the object, as though without the external orientation it simply could not exist. Almost it seems as though it were a sequence of external facts, or as though it could reach its highest point only when chiming in with some generally valid idea. It seems constantly to be affected by objective data, drawing only those conclusions which substantially agree with these. Thus it gives one the impression of a certain lack of freedom, of occasional short-sightedness, in spite of every kind of adroitness within the objectively circumscribed area. What I am now describing is merely the impression this sort of thinking makes upon the observer, who must himself already have a different standpoint, or it would be quite impossible for him to observe the phenomenon of extraverted thinking. As a result of his different standpoint he merely sees its aspect, not its nature; whereas the man who himself possesses this type of thinking is able to seize its nature, while its aspect escapes him. judgment made upon appearance only cannot be fair to the essence of the thing-hence the result is depreciatory. But essentially this thinking is no less fruitful and creative than introverted thinking, only its powers are in the service of other ends. This difference is perceived most clearly when extraverted thinking is engaged upon material, which is specifically an object of the subjectively orientated thinking. This happens, for instance, when a subjective conviction is interpreted analytically from objective facts or is regarded as a product or derivative of objective ideas. But, for our ♦scientifically* orientated consciousness, the difference between the two modes of thinking becomes still more obvious when the subjectively orientated thinking makes an attempt to bring objective data into connections not objectively given, i.e. to subordinate them to a subjective idea. Either senses the other as an encroachment, and hence a sort of shadow effect is produced, wherein either type reveals to the other its least favourable aspect, The subjectively orientated thinking then appears quite arbitrary, while the extraverted thinking seems to have an incommensurability that is altogether dull and banal. Thus the two standpoints are incessantly at war.
Such a conflict, we might think, could be easily adjusted if only we clearly discriminated objects of a subjective from those of an objective nature. Unfortunately, however, such a discrimination is a matter of impossibility, although not a few have attempted it. Even if such a separation were possible, it would be a very disastrous proceeding, since in themselves both orientations are one-sided, with a definitely restricted validity; hence they both require this mutual correction. Thought is at once sterilized, whenever thinking is brought, to any great extent, under the influence of objective data, since it becomes degraded into a mere appendage of objective facts; in which case, it is no longer able to free itself from objective data for the purpose of establishing an abstract idea. The process of thought is reduced to mere «reflection*, not in the sense of «meditation», but in the sense of a mere imitation that makes no essential affirmation beyond what was already visibly and immediately present in the objective data. Such a thinking-process leads naturally and directly back to the objective fact, but never beyond it; not once, therefore, can it lead to the coupling of experience with an objective idea. And, vice versa, when this thinking has an objective idea for its object, it is quite unable to grasp the practical individual experience, but persists in a more
Part III
