Free software' is a matter of liberty, not price. To understand the concept, you should think of 'free' as in 'free speech,' not as in 'free beer'.
Richard StallmanCreativity can be a social contribution, but only in so far as society is free to use the results.
Richard StallmanWriting non-free software is not an ethically legitimate activity, so if people who do this run into trouble, that's good! All businesses based on non-free software ought to fail, and the sooner the better.
Richard Stallman