What is at the heart of a liberal society? It is to uphold that we have a right to offend and a duty to tolerate offence. George Orwell said: if liberty means anything at all, it means the right to tell people what they do not want to hear. I think there are common values to all humankind. We see them in the commandments, and in one sense we don’t need to be told them because we know instinctively what is wrong and what is right. So liberals have to do that.