John Lewis explains that it is important to understand the philosophy of capitalism and the free market in order to better comprehend the economic issues we face today.  He argues that there are many misconceptions regarding the common good and collective interests, which politicians often use to justify the redistribution of income from one group to another.  Lewis emphasizes the importance of individual rights, defines altruism, and addresses widely held notions about self-sacrifice. He also describes how politicians react to society's prevalent views and the will of the voters.