Error (n.) is just as important a condition of life's progress as truth.
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Error (n.) is the birthplace of truth, as surely as light comes out of darkness.
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Error (n.) that proves more effective than a truth must be followed first, for power and life lie in it — light has need of darkness.
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Error (n.) is as important a condition of life's progress as truth, so the analyst must let the patient's own impulses lead, even down a path that seems wrong, rather than give convenient and fatal advice.
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Error (n.) is a ground of knowledge too, Jung held; knowledge rests on error as well as on truth.