“Emotion is the chief source of all becoming-conscious.”
Psychological Aspects of the Mother Archetype (1938)
Context: Emotion is the chief source of all becoming-conscious. There can be no transforming of darkness into light and of apathy into movement without emotion.
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C.G. Jung 257
Swiss psychiatrist and psychotherapist who founded analytic… 1875–1961Related quotes

“The search for happiness is one of the chief sources of unhappiness.”
Section 280 http://books.google.com/books?id=msOwAAAAIAAJ&q=%22The+search+for+happiness+is+one+of+the+chief+sources+of+unhappiness%22&pg=PA151#v=onepage
The Passionate State Of Mind, and Other Aphorisms (1955)

Source: Three “Whys” of the Russian Revolution (1995), pp. 17-18

“The principal source of the harm done by the State is the fact that power is its chief end.”
Principles of Social Reconstruction (1917), Ch. II: The State
1910s
“Conscious faith is freedom. Emotional faith is slavery. Mechanical faith is foolishness.”
Aphorisms

“The conscious side of woman corresponds to the emotional side of man, not to his "mind."”
Mind makes up the soul, or better, the "animus" of woman, and just as the anima of a man consists of inferior relatedness, full of affect, so the animus of woman consists of inferior judgments, or better, opinions.
The Secret of the Golden Flower (1931) Commentary by C.G.Jung in CW 13: Alchemical Studies. P. 60