The Old Teacher A group of prestigious university graduates came to visit their old professor. During the visit the conversation turned to work: graduates were complaining about countless difficulties and problems of life. After offering coffee to his guests, the professor went to the kitchen and came back with a coffee pot and a tray, filled with many different cups: porcelain, glass, plastic and crystalline. Some cups were simple, other ones – expensive. When the graduates picked out the cups, the professor said: – Notice, how all the beautiful cups were picked out, and the simple and cheap ones were