last day was the third day that I had appointment with the president of isfahan university to talk about my work and sth. else. And again an unpridictable event happened so that was canceled. I do not know why that event should happen at that time?! At first I become too angry and sad but just this sentence whisper in my ears: "The world has some signs that guid us, we should find and underestand them".( Chemistry, written by PAULA COALIO) may be all things that happened to me these days are the signs. But I do not know what should I do with them!