Writing 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.

If ebooks mean that readers' freedom must either increase or decrease, we must demand the increase.

If programmers deserve to be rewarded for creating innovative programs, by the same token they deserve to be punished if they restrict the use of these programs.

Somebody is saying this is inevitable – and whenever you hear somebody saying that, it's very likely to be a set of businesses campaigning to make it true.

The most powerful programming language is Lisp. If you don't know Lisp (or its variant, Scheme), you don't appreciate what a powerful language is. Once you learn Lisp you will see what is missing in most other languages.

Open source is a development methodology; free software is a social movement.

I don’t have a problem with someone using their talents to become successful, I just don’t think the highest calling is success. Things like freedom and the expansion of knowledge are beyond success, beyond the personal. Personal success is not wrong, but it is limited in importance, and once you have enough of it it is a shame to keep striving for that, instead of for truth, beauty, or justice.