notes from "General Description of the Types " C.G. Jung

"Thinking in general is fed on the one hand from subjective and in the last resort unconscious sources, and on the other hand from objective data transmitted by sense-perception." Jung: Psychological Types [abridged] CW Vol.6 Par 577

"A thinking that is directed neither to objective facts nor to general ideas, one might argue, scarcely deserves the name 'thinking' at all. ...only the extraverted type of thinking [is generally acknowledged]...this is largely because all thinking that appears visibly on the surface in the form of science or philosophy or even art either derives directly from objects or else flows into general ideas. ....oriented neither by immediate experience of objects nor by traditional ideas. Jung: Psychological Types [abridged] CW Vol.6 Par 578
"Orientation to the object...makes no essential change in the thinking functions only its appearance is altered." Jung, General Description of the Types [Abridged] CW Vol 6 Par 580 

"...when the main accent lies on the subjective process...the other kind of thinking arises which is opposed to extraverted thinking, namely that purely subjective orientation which I call introverted. This thinking is neither determined by objective data nor directed to them; it is thinking that starts from the subject and is directed to subjective ideas or subjective facts." Jung, General Description of the Types [Abridged] CW Vol 6 Par 579 

" In its essence [extraverted]...thinking is no less fruitful or creative that introverted thinking when, for instance, a subjective conviction is explained analytically in terms of objective data or as being derived from objective ideas --->(when extroverted thinking appropriates material that is the special province of introverted thinking)...[or] when introverted thinking attempts to bring objective data in to connections not warranted by the object-...to subordinate a subjective idea." Jung, General Description of the Types [Abridged] CW Vol 6 Par 581 

"The intuitive function is represented in consciousness by an attitude of expectancy, by vision and penetration; but only from the subsequent result can it be established how much of what was 'seen' was actually in the object, and how much was 'read into' it." Jung: General Descriptions of the Psychological Types C.W Vol P610

"Although the introverted consciousness is naturally aware of the external conditions, it selects the subjective determinants as the decisive ones. It is therefore oriented by the factor in perception and cognition which responds to the sense stimulus in accordance with the individual's subjective disposition." Jung: General Descriptions of the Psychological Types C.W Vol 6 P 621

"Wheras the extravert continually appeals to what comes to him from the object, the introvert relies principally on what the sense impression contellates in the subject" Jung: General Descriptions of the Psychological Types C.W Vol P 621

"...perception and cognition are not purely objective, but are also subjectively conditioned. The world exists not merely in itself, but also as it appears to me...We have...no criterion that could help us form a judgement of a world which is unassimiable by the subject. If we were to ignore the subjective factor, it would be a complete denials of the great doubt as to the possibility of absolute cognition." Jung: General Descriptions of the Psychological Types C.W Vol P 621