I have met bright students in computer science who have never seen the source code of a large program. They may be good at writing small programs, but they can't begin to learn the different skills of writing large ones if they can't see how others have done it.

Proprietary software tends to have malicious features. The point is with a proprietary program, when the users dont have the source code, we can never tell. So you must consider every proprietary program as potential malware.

We need to teach people to refuse to install non-free plug-ins; we need to teach people to care more about their long-term interest of freedom than their immediate desire to view a particular site.

The GNU GPL was not designed to be "open source".

If in my lifetime the problem of non-free software is solved, I could perhaps relax and write software again. But I might instead try to help deal with the world's larger problems. Standing up to an evil system is exhilarating, and now I have a taste for it.

Snow is so beautiful, it doesn't have to be useful.

Fighting patents one by one will never eliminate the danger of software patents, any more than swatting mosquitoes will eliminate malaria.