If Radicals for Capitalism is the story of the men and women who fought for liberty in the 20th Century, Jim Powell’s The Triumph of Liberty tells of those who came in the preceding 2,000 years. The book is an exhaustive collection of biographical articles on 65 major figures, from Marcus Tullius Cicero to Martin Luther King, Jr., summarizing their lives, thought, and impact. While not all of them were strictly libertarian, every one of the people Powell covers was instrumental in making the world a freer. For a grand sweep of liberty’s history through the lives of those who struggled in its name, there’s no better source than The Triumph of Liberty.