Nigel Warburton is senior lecturer in Philosophy at the Open University. He has written a number of books on philosophy including Philosophy: The Basics, Philosophy: The Classics, Thinking from A to Z, Freedom: An Introduction with Readings, The Art Question, and Free Speech: A Very Short Introduction. Other books include a biography of the architect Ernö Goldfinger and an edited book about the photographer Bill Brandt. With David Edmonds he makes the podcast Philosophy Bites (www.philosophybites.com ) which has had nearly 8 million downloads and has made the top 20 of all iTunes podcasts. A book based on the series has recently been published by Oxford University Press. His monthly column ‘Everyday Philosophy’ appears in Prospect Magazine and is also available as a podcast (www.prospect.libsyn.com). Nigel’s weblogs include www.virtualphilosopher.com and www.artandallusion.com. You can find him on Twitter at www.Twitter.com/philosophybites.