Sy Garte: Substitute Political beliefs for gods and religion. Or art, Or love. In other words anything human. The ones that still work also work for religion, that ones that don't work, don't work of any of them.
JWL: Let's focus on political beliefs. Science and reason are helping us accept what is probably best for people. Once we strip politics of religious doctrines it clears our heads to reject homophobic, bigoted, sexist views based on Mill's harm principle. Once we also strip politics of religious certainties it also helps us based on Mill's harm principle.