Tell him, "Hubbard's pretty controversial. If you're interested, here's a website. Here, I'll write it down... www.xenu.net
. Let me write down "The Hubbard is Bare," that's an interesting article on the writers that influenced Hubbard." Hand the guy the paper and say no more.
If he's curious, let him look for himself. If you lecture him in front of other people, he may resent looking foolish. Here's the link to "The Hubbard is Bare": http://xenu.phys.uit.no/lrhbare/
I'd like to add that Elron's history/ancient religion/philosophy seems plucked right out of Will and Ariel Durant's "Our Oriental Heritage" and garbled to fit his needs. This massive series, ten books each the size of the NY City phone book, was heavily promoted by the Book of the Month Club. Decades ago many living rooms had these books. Your local library probably still has all of them, too.
The books zips through the dawn of civilization, covering Shiva, the Tibetan Book of the Dead, Confucious, and so forth in an easy-reading format. If willing to take the time any college dropout could read this series and impress the yokels with his deep knowledge of the mysterious East.
Before "Our Oriental Heritage" there wasn't anything like this popularized book, and suddenly average people could learn about cool ideas from the past. As long as Hubbard kept attracting people who (1) hadn't taken Asian religion courses in college and (2) hadn't sat down and read "Our Oriental Heritage," he could dazzle them with his "genius" knowledge of the Buddha. Plus the Durants dropped in real quotes, so Elron could copy them as though he had been right at the feet of these wise men in previous lives. Yeah, right.
I only took one course in ancient Indian religion. Yet it was heavily influenced by the real "genius" Mircea Eliade. http://www.britannica.com/bcom/eb/artic ... 86,00.html
I remember wading awestruck through Eliade's "The Sacred and the Profane" at the time. I would not have dared quote the Durants in this course, since I could see how they had simplified and dumbed-down Buddhism, for example. If Hubbard had quoted Eliade, I would have been impressed that he had somehow gotten through the equivalent of a religion course aimed at 20-year old sophomores. But, alas, I have never seen Eliade quoted by Elron, although he was a huge influence on scholarly research in the 50's and 60's. It's just the "easy" Durant version that Elron plagiarizes.