Carl Jung. "Psychological Types" Book. CHAPTER X (General Description Of The Types). The Introverted type.
But, wherever the unconscious subject is identified with the ego, the mysterious power of the intensive feeling is also transformed into banal and arrogant ambition, vanity, and [p. 495] petty tyranny. This produces a type of woman most regrettably distinguished by her unscrupulous ambition and mischievous cruelty. But this change in the picture leads also to neurosis.
So long as the ego feels itself housed, as it were, beneath the heights of the unconscious subject, and feeling reveals something higher and mightier than the ego, the type is normal. The unconscious thinking is certainly archaic, yet its reductions may prove extremely helpful in compensating the occasional inclinations to exalt the ego into the subject. But, whenever this does take place by dint of complete suppression of the unconscious reductive thinking-products, the unconscious thinking goes over into opposition and becomes projected into objects. Whereupon the now egocentric subject comes to feel the power and importance of the depreciated object. Consciousness begins to feel 'what others think'.
Naturally, others are thinking, all sorts of baseness, scheming evil, and contriving all sorts of plots, secret intrigues, etc. To prevent this, the subject must also begin to carry out preventive intrigues, to suspect and sound others, to make subtle combinations. Assailed by rumours, he must make convulsive efforts to convert, if possible, a threatened inferiority into a superiority.
Innumerable secret rivalries develop, and in these embittered struggles not only will no base or evil means be disdained, but even virtues will be misused and tampered with in order to play the trump card. Such a development must lead to exhaustion. The form of neurosis is neurasthenic rather than hysterical; in the case of women we often find severe collateral physical states, as for instance anæmia and its sequelæ...