Problematic quote, since RMS would never call the GNU/Linux system just "Linux".
Background:
https://en.m.wikipedia.org/wiki/GNU/Linux_naming_controversy
https://www.gnu.org/gnu/linux-and-gnu.html
https://www.gnu.org/gnu/why-gnu-linux.html
https://www.gnu.org/gnu/gnu-linux-faq.html
I'd suggest...