How to talk to a friend

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First off I'd like to know what this message was in response to.

I think your friend sounds very smart and that his advice is sound. Healthy skepticism is a good thing to develop.

You have come to believe in utter nonsense and, somehow, think that everyone else is wrong.

Do you ever tell your friend that they are wrong in their beliefs?

Personally I have many friends who think spirituality stuff is nonsense and that's fine. If those topics come up in conversation (which is rare) I will offer an opinion, but for the most part those topics aren't touched and we get along fine. Friends don't have to believe the same things, that's fine.

Faith is good, but blind faith can lead one astray.