The Adobe flash plug-in is non-free software, and people should not install it, or suggest installing it, or even tell people it exists.
Richard StallmanI never imagined that the Free Software Movement would spawn a watered-down alternative, the Open Source Movement, which would become so well-known that people would ask me questions about "open source" thinking that I work under that banner.
Richard StallmanIf the users don't control the program, the program controls the users. With proprietary software, there is always some entity, the "owner" of the program, that controls the program and through it, exercises power over its users. A nonfree program is a yoke, an instrument of unjust power.
Richard Stallman