Curly, you may have tossed off that quip without so intending, but that point is close to the heart of Benedict’s Regensburg speech — that reason itself is rooted precisely in the Christian revelation and understanding of God, without which any attempt at thought devolves into irrationality. The entire Western intellectual tradition (and the fruits thereof: universities, hospitals, human rights, etc.) could not exist had the Christians not melded the two truths, Apostolic revelation handed down through the Church, and systematized reason as formulated by Plato and Aristotle, into a single coherent conception of truth.
Of course, logic dictates that to the extent the West repudiates metaphysical truth per se (Truth — Logos — ultimately being a Person and flowing from Him), it will also discard the intellectual edifices of human reason, and will eventually lose the fruits of reason too. Sic transit gloria mundi.
