Every true faith is infallible. It performs what the believing person hopes to find in it. But it does not offer the least support for the establishing of an objective truth. Here the ways of men divide. If you want to achieve peace of mind and happiness, have faith. If you want to be a disciple of truth, then search.
Friedrich Wilhelm Nietzsche, Christopher Middleton (1996). “Selected Letters of Friedrich Nietzsche”, p.7, Hackett Publishing