On the morning last Sunday I had been on guard alone for two hours at school. This was the first time I have realized a heavy responsibility to assume. The whole school was entrusted to me. No one else came to my help. The schoolyard was large, quiet and clean. I was greatly disquieted by the circumstances then. I've been tired of my teaching work for finding no way to deal with the provocative trouble-makers in class. Therefore I had once intended to ask to be transferred to another job such as keeping watch. Now my experience as a temporary guard indicated that no occupation can save worry.