„Art calls for complete mastery of techniques, developed by reflection within the soul.“

— Bruce Lee

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„All instincts that do not discharge themselves outwardly turn inward — this is what I call the internalization of man: thus it was that man first developed what was later called his "soul."“
— Friedrich Nietzsche
„The eyes are the mirror of the soul and reflect everything that seems to be hidden; and like a mirror, they also reflect the person looking into them.“
— Paulo Coelho