There is an important component of delusions. A person becomes convinced that their beliefs are true before they start to evaluate them. In other words, the decision to believe is made subconsciously. Rational thought occurrs after the decision is made.
I am not prepared to quote exact sources at present. I am yet to process this completely. However this notion made leaps towards health for me .
Therefore it is very difficult to impossible to rationalize oneself out of a delusion. Every madman here says that they struggle to get rid of delusions. Often despite medication.
Madmen did not make a mistake in their thinking. There was an error before any thinking took place, on the tier of subconscious.
+++ Usually voices are simply one’s own thoughts given properties of a character. Not sure if it can be called anthropomorphism.
Try to discard the notion of telepathy completely.