"believe in" has three meanings : 1. to feel sure that something exists. 2.to feel something is right or valuable. 3. to feel sure that somebody is competent.
I think this belongs to 1, but not sure of 2. What do you think?
330-258
ex)The tech elite who first developed the Internet believed strongly in the freedom of cyberspace, in both aspects of "free" - free as in beer, and free as in freedom...
