Her father’s dagger, which he once flashed in the sun in front of her. It made a great impression on her. Her father was in every respect an energetic, strongwilled man, with an impetuous temperament
Jung uses a patient’s personal memory of her father’s dagger as the associative bridge to the cultural-archetypal significance of the sword, demonstrating how the individual image opens onto collective symbolic meaning through constructive interpretation.
, The Structure and Dynamics of the Psyche, 1960thesis