Saw an xkcd comic referencing Prof. Lawrence Lessig's seminal text,
Free Culture which inspired me to take it back off the shelf and read it again. I was delighted to see him directly acknowledge Richard Stallman's
Free Software, Free Society, of which I have a signed copy, as Stallman was the father of the Copyleft movement and his book paved the way for Lessig's work and the founding of Creative Commons.
For a book on the history and future of copyright law penned by a lawyer, the text is surprisingly inspiring and accessible. And though it was published back in 2004, it's still arrestingly relevant today.