"The extravert's feeling is always in harmony with objective values. For anyone who has known feeling only as something subjective, the nature of extraverted feeling will be difficult to grasp, because it has detached itself as much as possible from the subjective factor and subordinated itself entirely to the influence of the object. Even when it appears not to be qualified by a concrete object, it is none the less under the spell of traditional or generally accepted values of some kind...This kind of feeling is largely responsible for the fact that so many people flock to the theatre or to concerts, or go to church...fashions, too, owe their whole existence to it, and, what is far more valuable, the positive support of social, philanthropic, and other such cultural institutions. In these matters extraverted feeling proves itself a creative factor. Without it, a harmonious social life would be impossible."   --C.G. Jung, Psychological Types (#595, 596)

"'Still waters run deep' is very true of [introverted feeling types]. They are mostly silent, inaccessible, hard to understand....As they are mainly guided by their subjective feeling, their true motives generally remain hidden. Their outward demeanor is harmonious, inconspicuous, giving an impression of pleasing repose, or of sympathetic response, with no desire to affect others, to impress, influence or change them in any way....Since this type appears rather cold and reserved, it might seem on a superficial view that [they] have no feelings at all. But this would be quite wrong; the truth is, their feelings are intensive rather than extensive. They develop in depth."   --C.G. Jung, Psychological Types (#640-641)

"This type [endeavors] to make all his activities dependent on intellectual conclusions, which in the last resort are always oriented by objective data, whether these be external facts or generally accepted ideas. This type...elevates objective reality, or an objectively oriented intellectual formula, into the ruling principle not only for himself but for his whole environment....Everything that agrees with this formula is right, everything that contradicts it is wrong, and anything that passes by it indifferently is merely incidental....The thinking of the extraverted type is positive, i.e., productive. It leads to the discovery of new facts or to general conceptions based on empirical material. It is usually synthetic, too. Even when it analyses, it constructs, because it is always advancing beyond the analysis to a new combination, to a further conception which reunites the analysed material in a different way or adds something to it." --C.G. Jung, Psychological Types (#585, 592)

"...Whether introverted thinking is concerned with concrete or with abstract objects, always at the decisive points it is oriented by subjective data. It does not lead from concrete experience back again to the object, but always to the subjective content. External facts are not the aim and origin of this thinking...With regard to the establishment of new facts it is only indirectly of value, since new views rather than knowledge of new facts are its main concern. It formulates questions and creates theories, it opens up new prospects and insights, but with regard to facts its attitude is one of reserve....Facts are collected as evidence for a theory, never for their own sake....Facts are of secondary importance for this kind of thinking; what seems to it of paramount importance is the development and presentation of the subjective idea, of the initial symbolic image hovering darkly before the mind's eye. Its aim is never an intellectual reconstruction of the concrete fact, but a shaping of that dark image into a luminous idea...He will follow his ideas like the extravert, but in the reverse direction: inwards and not outwards. Intensity is his aim, not extensity."   --C.G. Jung, Psychological Types (#628, 633)

"No other human type can equal the extraverted sensation type in realism. His sense for objective facts is extraordinarily developed. His life is an accumulation of actual experiences of concrete objects....As sensation is chiefly conditioned by the object, those objects that excite the strongest sensations will be decisive for the individual's psychology. The result is a strong sensuous tie to the object....Objects are valued in so far as they excite sensations, and...they are fully accepted into consciousness whether they are compatible with rational judgements or not. The sole criterion of their value is the intensity of the sensation produced by their objective qualities."  --C.G. Jung, Psychological Types (#606, 605)

"In the introverted attitude sensation is based predominantly on the subjective component of perception....What is perceived is either not found at all in the object, or is, at most, merely suggested by it....Normally the object is not consciously devalued in the least, but its stimulus is removed from it and immediately replaced by a subjective reaction no longer related to the reality of the object."  --C.G. Jung, Psychological Types (#647-650)

"Because extraverted intuition is oriented by the object, there is a marked dependence on external situations, but it is altogether different from the dependence of the sensation type. The intuitive is never found in the world of accepted reality-values, but he has a keen nose for anything new and in the making. Because he is always seeking out new possibilities, stable conditions suffocate him....If only he could stay put, he would reap the fruits of his labours; but always he must be running after a new possibility, quitting his newly planted fields while others gather in the harvest."  --C.G. Jung, Psychological Types (#613, 615)

"Introverted intuition perceives all the background processes of consciousness with almost the same distinctness as extraverted sensation registers external objects. For intuition, therefore, unconscious images acquire the dignity of things....The images appear as though detached from the subject, as though existing in themselves without any relation to him."  --C.G. Jung, Psychological Types (#657)