Gender. Sexuality. Religion. Race. Nationality. Class. Culture. These are just some of the key facets of identity that help us define who we are, which often involve labels, stereotypes and ideas about how you should behave.
In his new book , "The Lies That Bind'' the celebrated philosopher Kwame Anthony Appiah challenges our assumptions about how identity works, and also recognises that if we get it right it can help expand our horizons.