The investigator should have a robust faith - and yet not believe.

I don't believe in conspiracy theories. I'm just a cold-blooded investigator.

I believe though I do not comprehend, and I hold by faith what I cannot grasp with the mind.

You can tell he never even considered the possibility of something like this happening to him. He's as out of his element hiring an investigator to snoop on his wife as he would be auditioning for a Russian ballet.

It is what we know already that often prevents us from learning

It's what we think we know that keeps us from learning.