It is now 30 years since I launched the campaign for freedom in computing, that is, for software to be free or “libre” (we use that word to emphasize that we’re talking about freedom, not price). Some proprietary programs, such as Photoshop, are very expensive; others, such as Flash Player, are available gratis — either way, they subject their users to someone else’s power.

http://www.wired.com/opinion/2013/09/why-free-software-is-more-important-now-than-ever-before/