Wikipedia:The best thing about Wikipedia

Welcome! Feel free to add your own favourite. There are no wrong answers.

But I suggest just one per contributor. And unsigned of course. Discussion, including votes for your favourites, belongs on the talk page.

Wikipedia combines learning and teaching
The best teachers are good learners, and get to be better teachers by learning. The best learners are good teachers, and get to be better learners by teaching. They go together. That's what a University is supposed to be about too.