Helping each other out.
The mutual-aid tendency in man has so remote an origin, and is so deeply interwoven with all the past evolution of the human race, that it has been maintained by mankind up to the present time, notwithstanding all vicissitudes of history.
-- Kropotkin, Mutual Aid
I consider that the golden rule requires that if I like a program I must share it with other people who like it.
-- RMS, The GNU Manifesto