the sorrow of death

This Wednesday,one Canadian teacher in my school dead by a heart attack. The atmosphere in school was filled with sorrow.
It is really an irony as Mr.E said,"we are talking about death from the book The Tuesday With Morrie,it seems that we are getting ready for death but actually when death really comes, we can't really face it."
It is the first time death is so close to me. I felt the sorrow of it.