Incidentally, I got that "intellectual suicide" line from our dear, departed brother Robert Anton Wilson, and this essay of his:
In Doubt We Trust: Cults, Religions, and BS in General
It's a good place to begin with R.A.W. and one of his core ideas:
Human brains are as individualized and unique as human fingerprints. We all live in different sensory universes, and nobody has a guarantee that his/her universe corresponds more exactly to the alleged "real universe" than anybody else's.