In "The Call of Earth" by Orson Scott Card, the author presents the idea that while doubt can be an infinite loop, there comes a crucial moment when action is required. Individuals must choose a belief to trust and act upon, ultimately making a decision to embrace the truth that resonates most with them. This belief shapes their perspective and guides their actions in the world.

Card emphasizes the necessity of hope and faith in shaping one's reality. By choosing to believe in God, the narrator reveals a desire to engage with a hopeful vision of the world. This commitment to faith is a deliberate choice to live according to the values and truths that bring meaning and direction to life, illustrating the interplay between belief and action.