In "The Undiscovered Self," C.G. Jung emphasizes that belief alone cannot replace genuine inner experience. He argues that without authentic personal experiences, even the most profound faith, which might seem like a miraculous gift, can fade away just as easily. This highlights the importance of personal insight and understanding over mere acceptance of beliefs.

Jung suggests that true connection to oneself and the deeper aspects of existence is crucial for a stable and lasting faith. Relying solely on external beliefs or doctrines can lead to a fragile sense of self, susceptible to doubt and disillusionment. Individuals must cultivate their inner experiences to foster resilience and a more profound understanding of their own existence.