I heard the professors talking. They know a lot, but it's esoteric. They just like to explore ideas. They don't care that it has no practical value.
I heard the activists talking. They are passionate about the state of the world. They have strong opinions. They think they know a lot about their issue, but they've just read a few books, just looked at it from one point of view.
Once in a while someone comes along who combines a professor's depth and breadth of knowledge with an activist's vision for what is important for the welfare of the world.
I would like that combination to come about more often. That's one reason I'm interested in education and librarianship.