Nobel Peace Prize winner and former Canadian Prime Minister Lester Pearson contemplates the political world order in his Reith series entitled 'Peace in the Family of Man'. In this lecture entitled 'The United States of the World', Lester Pearson contemplates the concept of nationalism. What is a national identity? How can we dispel the emotions and prejudices which are wrapped up in it? And how does internationalism change our perspectives? He explores why we create nations and explores how the concept is used at a political and social level.