He realized his lack of knowledge formed the basis of his unbelief. As Lewis explained in a letter written shortly after his transition, “What has been holding me back . . . has not been so much a difficulty in believing as a difficulty in knowing . . . you can’t believe a thing while you are ignorant what the thing is.”
Nicholi, Armand (2002-04-03). The Question of God (p. 93). Simon & Schuster, Inc.. Kindle Edition.