Faith is Feelings

[AFTT47]

Well, emotions are irrational. Just ask a Vulcan. Therefore, it stands to reason that faith is irrational.

At least non-rational. There is a difference between non-rational and irrational.

A non-rational belief is one which has its roots in emotion but has not yet been subjected to the scrutiny of logic.

An Irrational belief HAS been subjected to the scrutiny of logic and is retained despite failing that test.

I have personal experience with such. I was once an advocate of the idea of visitation by ancient aliens - particularly those championed by Erich von Däniken. I was emotionally predisposed to those ideas. I bought his arguments, not recognizing that they were non-rational. Eventually though, I saw a documentary which used science and logic to utterly destroy his arguments. If I had retained my belief in his arguments at that point, it would have migrated to realm of irrationality. I embraced logic though and modified my beliefs.