Professors’ Quotations

Prof. Ren: "If you learn nothing but these two words (triangular inequality), you can get a B+"

Prof. Ren:"If you forget everything on an exam, write the triangular inequality."

Prof. Ren:"Please don't take a picture and share it with others. They will think that we are in kindergarten learning how to draw the sun. "          ——After drawing an open ball

Prof. Ren:"If you make something creative, then you should stand here and I should sit on your chair. "       ——During a research seminar

Prof. Ren:"Why am I always so slow." ——After spending 1 hour explaining some trivial examples

Prof. Davis:"I feel so good because I don't have any class until next week, so today is my Friday and I decide to cancel Friday's office hour." ——During a Wednesday class

Prof. Ren:"You all know how to get a B+" ——After everyone in class shouted out "triangular inequality".

Prof. Ren:"I thought my English is the worst, but now it is proved wrong."  ——When someone asked what does "w.r.t" mean

Prof. Ren:"The exam is closed for everything. Only open your eyes."

Prof. Ren:"Why the answer is this? Because we are wrong!"

Prof. Ren:"I know you are missing Turkey, so I will let you go early." ——Last class before Thanksgiving day.

Prof. Ren:"That's Columbia." ——When I complained the admission process is too slow.

Prof.Ren:"Where did I miss the 1/2?" ——Comparing $ \frac{\pi^2-6}{2\pi^4 } $ and $\frac{1}{2}\cdot\frac{\pi^2-6}{\pi^4 }$

Prof.Ren: "This will not be covered in the final exam, so you can fall asleep if you are tired."