For a New Liberty: The Libertarian Manifesto | 
pickI believe that it has to be universally understood, by those familiar with Murray Rothbard and libertarian ideas, that this book is his greatest creation. Skillfully and intelligently able to bring about several varying subjects and masterfully compiling them into an entirety of understanding. It is beyond a work of art, an essential book to read for anyone who is looking to increase their understanding of history and the workings of society.