Question: Know for having the first Harvard course available online, what book about political philosophy did this professor write?  

Related documents: [0]  [DOC] Michael J. Sandel ( ; born March 5, 1953) is an American political philosopher and a political philosophy professor at Harvard University. His course “Justice” is the first Harvard course to be made freely available online and on television. It has been viewed by tens of millions of people around the world, including in China, where Sandel was named the “most influential foreign figure of the year.” (China Newsweek). He is also known for his critique of John Rawls' "A Theory of Justice" in his first book, "Liberalism and the Limits of Justice" (1982). He was elected a Fellow of the American Academy of Arts and Sciences in 2002. [END] 
[1]  [DOC] Liberalism and the Limits of Justice (1982; second edition 1998) is a book about political philosophy by Michael Sandel. The work helped start the liberalism-communitarianism debate that dominated Anglo-American political philosophy in the 1980s. [END]  
Answer: Liberalism and the Limits of Justice
Liberalism and the Limits of Justice