Without faith, reason is without roots

If however reason, concerned about its supposed purity, fails to hear the great message that comes from the Christian faith and the understanding it brings, it will dry up like a tree with roots cut off from the water that gives it life. It will lose the courage needed to find the truth and thus become small rather than great.

Applied to our European culture this means that if it wants to constitute itself on the basis of its arguments and whatever appears to it to be convincing, with concerns about its own secular nature, it will cut itself off from its life-sustaining roots, and in doing so will not become more reasonable and pure but will instead become undone and fragmented.

Pope XVI Benedict Speech to La Sapienza – the University of Rome