Free Software, Free Society: Selected Essays of Richard M. Stallman collects the writing of Richard M. Stallman. Essays contained in this book deal mainly about ethics, law, business and their application to computer software. The introduction is written by Lawrence Lessig, professor at Harvard Law School. The book is divided into seven main parts: The GNU Project and Free Software What's in a Name? Copyright, Copyleft Software Patents: Danger to Programmers The Licences Traps and Challenges An Assessment and a Look Ahead The first edition was published in 2002 by GNU Press under the GNU Free Documentation License. The second one, published in 2010, contains both updated versions of the original essays and many new essays.