What is the theme in Free to Choose: A Personal Statement by Milton Friedman?

Economic freedom is another theme of the book. Economic freedom is closely tied to the nature of the political system and human freedom. Economic freedom means all economic agents have the freedom to act in their own best interests and to do what is best for themselves. Economic freedom means that individuals have the human freedom to make their own decisions in response to incentives and to act in their own best interest. Individuals are then willing to take risks in the hopes of experiencing financial gain.