Although I think the author fairly summarizes the Stallman/FSF position on NoDerivs, here are a couple of quotes from gnu.org for background (presumably fair us

Although I think the author fairly summarizes the Stallman/FSF position on NoDerivs, here are a couple of quotes from gnu.org for background (presumably fair use, NoDerivs notwithstanding): "Works that express someone's opinion—memoirs, editorials, and so on—serve a fundamentally different purpose than works for practical use like software and documentation. Because of this, we expect them to provide recipients with a different set of permissions: just the permission to copy and distribute the work verbatim." https://www.gnu.org/licenses/license-list.en.html#OpinionLicenses https://www.gnu.org/licenses/license-list.en.html#OpinionLic... "The second class of work is works whose purpose is to say what certain people think. ... To modify them is to misrepresent the authors; so modifying these works is not a socially useful activity." https://www.gnu.org/philosophy/copyright-and-globalization.html#opinions https://www.gnu.org/philosophy/copyright-and-globalization.h... (excerpted from the book under discussion, Free Software, Free Society) Edit: the second quote is from the book, not first.