Teaching in the U.S. recently, playwright Mark Ravenhill encountered a Christian student who was allowed to opt out of course material he found objectionable on the basis of his Christian beliefs. It’s not just an American phenomenon, Ravenhill says; it’s happening in the U.K., too. “Surely the university should declare itself a liberal organisation, and insist that those joining it must abide by its liberal values? … There should be no opt-outs when it comes to culture.”