Earlier on this page Eliezer writes,

I have sometimes been approached by people who say "How do I convince people to wear green shoes? I don't know how to argue it," and I reply, "Ask yourself honestly whether you should wear green shoes; then make a list of which thoughts actually move you to decide one way or another; then figure out how to explain or argue them . . .

That piece of advice is also in Eliezer's "Singularity Writing Advice" where I saw it in 2001. I decided to adhere to it and for what it is worth have never regretted the decision. It works as far as I can tell even for my outre moral beliefs.