Good question, I'd say...
Faith is a bridge over troubled waters..
Reason is snorkling equipment.. (Jaws theme)..
It goes deeper than that, dear brother hosepipe: Reason would have no reason to trust itself, absent faith. In this case, faith in reason.
But what constitutes reason? Is it as man defines it? Or is it as God defines it, in giving it its root principles in the first place -- that is, logic and experience?
Just as there would be no reason at all to rail against and deny God absent the tacit admission that God "exists." Why would anybody want to spend so durned much time and energy fighting a fiction??? As some folks around here seemingly are wont to do, in their own imaginations at least??
Yet it also seems clear to me that in our own times we are "snorkeling in troubled waters." Surrounded in murk, vision is lacking.