うろたどな

"These fragments I have shored against my ruins."

学生のペーパーを読みながら

Probably for the first time I found it's extremely depressing to read and grade students' papers. I almost felt guilt in reading poor papers: "is this all because I didn't do what I should have done?" I believe I did a decent service to them as an "alien" instructor, but their miserable papers undermine my conceit in so scathing and ruthless a manner...I feel devastated and don't know whether I should feel sad ("Oh, what a mess!"), angry ("how silly they are!"), blame myself, or forget this all and return back to my reading lists.