To be able to choose between proprietary software packages is to be able to choose your master. Freedom means not having a master.
Richard StallmanWithout absolute certainty, what do we do? We do the best we can. Injustice is happening now; suffering is happening now. We have choices to make now. To insist on absolute certainty before starting to apply ethics to life decisions is a way of choosing to be amoral.
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 StallmanCopying all or parts of a program is as natural to a programmer as breathing, and as productive. It ought to be as free.
Richard Stallman