Intellectualism is the idea that all truth can be discovered by reasoning. René Descartes started with “I think, therefore I am,” and proceeded down this line of reasoning to discover all that was worth knowing, to his own satisfaction at least.
The fatal flaw in this is that God is considered as irrelevant and thus the reasoning is based on the false premise that the human mind is able to comprehend the meaning of all things. Reason is not contrary to faith, but reasoning based on false premises does lead away from faith.
The rage against faith by many intellectuals of our day should be seen as an acknowledgement that they know they are on shaky ground. Their fine sounding reasoning has not brought the fulfillment and happiness they anticipated, but they are determined to never admit that. Hence the furious attempts to ridicule, vilify and silence anyone who has the temerity to point out the weaknesses in their reasoning.
There is nothing about Christian faith that is contrary to reason; there is no evidence in the way that things really are and how they work that contradicts the revelations given in the Bible. Christian faith puts us in harmony with the way things really are. That is to be expected if we are in harmony with the Creator of all things.
It is enough for Christians to patiently and humbly point out the reasonableness of Christian faith. We should never be the ones on the attack, with ridicule and harsh words. We should avoid all triumphalism and above all avoid all fables that purport to offer proof of Christian faith. The Bible is enough.