Try www.reexamine.org in the online publications section. I think there was mention of that both in the Youth book and in Pay Attention to Yourselves and to All the Flock book.
You also might find mention of it on the borg's home page.
Oh, and here's some more that say checking out your own religion and exposing falsehoods within it is the right thing to do: http://www.reexamine.org/quotes/verify.htm