"I’ll presume to call it Neuhaus’ Law, or at least one of his several laws: Where orthodoxy is optional, orthodoxy will sooner or later be proscribed. Some otherwise bright people have indicated their puzzlement with that axiom but it seems to me, well, axiomatic. Orthodoxy, no matter how politely expressed, suggests that there is a right and a wrong, a true and a false, about things. When orthodoxy is optional, it is admitted under a rule of liberal tolerance that cannot help but be intolerant of talk about right and wrong, true and false. It is therefore a conditional admission, depending upon orthodoxy’s good behavior. The orthodox may be permitted to believe this or that and to do this or that as a matter of sufferance, allowing them to indulge their inclination, preference, or personal taste. But it is an intolerable violation of the etiquette by which one is tolerated if one has the effrontery to propose that this or that is normative for others."
Richard John Neuhaus, "Under the Shadow," First Things, January 1997.