"We need more civility!" is a frequent complaint lodged by politicians, pundits, and even philosophers on all sides. Teresa Bejan, who teaches political theory at Oxford University, is the author of Mere Civility: Disagreement and the Limits of Toleration, where she traces the history of civility from early modern English and American thought, especially in John Locke, Thomas Hobbes, and Roger Williams. She explains what "mere civility" means, why it should not be confused with a simplistic call for civility and to be “nice,” and how this concept can yet serve as the common ground for arguments over things that usually divide people - including free speech. She’s also done at TED talk on civility.