2007/2/8, Kat Walsh kwalsh@wikimedia.org:
The mission of the Wikimedia Foundation is to develop educational content under a free content license or in the public domain. For content to be "free content", it must have no significant legal restriction on people's freedom to use, redistribute, or modify the content for any purpose.
There's been some discussion about this phrase on the Dutch IRC channel. In general, I did not agree. In my opinion, free content is the mission, free licenses and public domain are the means, not the goal itself.