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"Metaphysical assertions, however, are statements of the psyche, and are therefore psychological. ... Whenever the Westerner hears the word “psychological,” it always sounds to him like “only psychological.”" – Carl Jung, "Psyche and Symbol" (1958), p. 285
"The knowledge of anything, since all things have causes, is not acquired or complete unless it is known by its causes. Therefore in medicine we ought to know the causes of sickness and health. And because health and sickness and their causes are sometimes manifest, and sometimes hidden and not to be comprehended except by the study of symptoms, we must also study the symptoms of health and disease. Now it is established in the sciences…
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