There is a famous Zen story or Koan called 'Empty your cup' that reads: ;)
Flickr - kazukichi
Nan-in, a Japanese master received a university professor who came to inquire about Zen.
Nan-in served tea. He poured his visitor's cup full, and then kept on pouring.
The professor watched the overflow until he no longer could restrain himself. "It is overfull. No more will go in!"
"Like this cup," Nan-in said, "you are full of your own opinions and speculations. How can I show you Zen unless you first empty your cup?"
The point is a telling one, that preconceived notions and pre-drawn conclusions effectively limit one's ability to accept new ideas, consider new approaches, and see things in a new light.
Since I am a professor of sorts, this koan is one I think about often. As teachers, it can be incredibly easy to walk into class with a 'full cup', comfortable in the knowledge that your views, your experience, and your insights are the only important ones, and that since you are the 'teacher' it is the student's that carry the empty cups, relying on you for wisdom and guidance.
But truly, that is an extremely short-sighted, and selfish point of view.
Each time I have taught, I have become more and more convinced that I learn as much from the class as they learn from me. In many ways I am simply a facilitator or experienced guide, but the real learning only can come from their interactions with each other, and with the larger community.
I have tried to introduce more 'community' into my class, by encouraging the students to use Twitter and read and comment on blogs, and in the last session of my most recent class by holding a really exciting 'virtual' Expert Panel discussion.
Going forward, I plan to emphasize these elements more, and try to de-emphasize my role as the 'sole source of truth'.
After all, when class begins the next time, I will walk in with an empty cup.