Of course, I think in terms of movie quotes and song lyrics, so this particular quote came to mind. It's from my all time favorite chick flick Say Anything:
A lot of [people] think they have to know, right? But inside they don't really know, so... I don't know, but I do know that I don't know.-- LLOYD DOBLER
In class there are a lot of unknowns, and for someone like me, a fact lover, it does get frustrating. Knowing that there's no end in sight can drive someone up a wall, but however, I do feel as if embracing that we know that we don't know can help during class.