In C.G. Jung's "The Archetypes and the Collective Unconscious," the quote highlights the contrast between our true selves and the personas we present to others. The mirror symbolizes self-reflection, presenting an unfiltered view of our inner realities. This honest reflection reveals aspects of ourselves that we often hide behind socially constructed facades or masks, which we wear like actors playing roles.

Jung emphasizes the importance of recognizing these hidden truths. By acknowledging the face we conceal, we can begin to understand our authentic selves better. This process of confronting our inner selves may be uncomfortable, but it is essential for personal growth and authenticity in our interactions with the world.