The brightest people are the ones who have a choice in what they do. They will only give fully of themselves to a project, effort, or even a job if they are assured that in the giving of themselves – they are not losing themselves. The rarest and most precious gift is the gift of ideas, vision, and leadership. Bright people are bursting to to share their best ideas and efforts with the world – but they do not want to lose their own right to those gifts.
See also:
The Apache Software Foundation Individual Contributor License Agreement
http://www.apache.org/licenses/icla.txt