Ron Paul is no longer a congressman or presidential candidate. He retired and now spends more time personally tweeting somewhat offensive things. He's also working on a book titled "New School Manifesto."
From the Washington Post:
“New School Manifesto” will be released by Grand Central on Sept. 17. The publisher describes the upcoming book as “a focused guide to Dr. Paul’s position, which centers on a strong support for home schooling and free market principles applied to education. He makes the case for individual freedoms as they pertain to educating our children, and nimbly dissects the most pressing issues that need to be addressed from the libertarian point of view.”
In 2009, Paul published The Revolution, another manifesto also about freedom.