True faith is grounded in the deeper experiences of the spirit and the unerring deliverances of purified intuition. It is not to be regarded as the antithesis of critical reason but as the unfailing guide of critical reason. When critical reason is implemented by a deep and living faith based on pure intuition, its functioning becomes creative, fruitful, and significant instead of barren, ineffective, and meaningless. On the other hand, many forms of naive credulity cannot be broken through except by the fearless and free working of critical reason.
However, it remains true that critical reason can touch and inform only those kinds of faith that are not based upon pure intuition. True faith grounded in pure intuition always remains an imperative that cannot be ultimately reduced to the conclusions of rational intellect. It is not derived from the limited intellect but is more fundamental and primary, with the result that it cannot be silenced by any intellectual acrobatics. This does not mean, however, that faith need at any stage be blind, in the sense that it is not allowed to be examined by critical intellect. True faith is a form of sight and not of blindness. It need not be afraid of the free functioning of critical reason.
-Discourses 7th Ed. p367