Belief occupies a contested and multi-layered position within the depth-psychology corpus. Far from settling into a single definition, the literature stages an ongoing dispute between belief as epistemic shortfall — a weakened form of knowledge — and belief as relational commitment, a mode of care that precedes and exceeds propositional certainty. McGilchrist articulates this tension most sharply, locating the deflationary reading in left-hemisphere instrumentalism while assigning to the right hemisphere a richer account in which belief describes a bond of responsibility between persons. Jung, writing from within both clinical and theological registers, repeatedly refuses to equate belief with knowledge while also refusing to dismiss it: in the Red Book he argues that the modern psyche requires knowledge more urgently than belief, yet insists that knowledge alone is insufficient; in his letters he characterizes belief-as-interpretation as a falsification of immediate experience. The Platonic tradition, mediated through Lorenz, restricts belief to a distinctively rational capacity requiring linguistic articulation and reflective judgment, thereby excluding it from the non-rational parts of the soul. The Stoic framework, examined by Graver, treats evaluative beliefs as the causal matrix of emotion, making them the primary therapeutic target. Pargament situates religious belief within a coping psychology, attending to what happens when predictive belief is disconfirmed under stress. Across all these positions, belief remains irreducibly entangled with questions of trust, knowledge, archetype, soul, and the limits of rational cognition.