There was a Japanese Zen Master called Ryokan. One day, Ryokan heard his family complain that his nephew was wasting money on prostitutes. Ryokan went to visit his nephew, whom he had not seen for many years.
His nephew invited him to stay one night. All night long ryokan sat in meditation. As he was preparing to leave the next morning, he asked his nephew, “I must be getting old, my hand shakes so. Will you help me tie the string of my straw sandal?”
The nephew helped him.
Ryokan replied, “Thank you. a man gets older and feebler day by day. Take good care of yourself.”
Then Ryokan left, without mentioning a word about prostitutes or the complaints of the family. But from that day on, his nephew truly reformed, and stopped spending money on prostitutes and stopped dissipating his life.