The Midrash says that the mother of Samuel the Prophet prayed that her son should not be too smart, nor dumb. You can see the problem with being too smart in a lot of intellectuals when their over extended minds mislead them. This is a point that Rav Nahman made in the Lekutai Moharan [The Le.M for short]. In particular you can see this in collage campuses where Harvard and Yale students and professors are cheering for Hamas.
In philosophy however there was one philosopher who noticed the limits of reason and in fact that is the name of his book--The Critique of Pure Reason. The answer to the question "What is the limit of reason?" is the possibility of experience. i mean to say [from Kant] that outside of that realm of possible experience, reason collapses and starts to come up with self contradictions. --iI am not saying that is the end of the story. Rather there was the Friesian approach to Kant which to me makes the most sense. See the web site of Kelley Ross who shows some of the wider aspects of that approach in how it applies to faith. That aspect of the Kant Fries approach was first noticed by Otto.
