There was a story about a monk. I think it was in America, also an American monk. He wrote a book about his experiences as a monk in a monastery before. When he was a monk, in that monastery, he abided strictly by the rules of that place. Just like what time to do what, you know, working in the garden, time to eat, time to pray and time to sleep again. Any kind of thing he abided strictly by the rules, and was always concentrated. He didn't think of complaining and wanting to change the policy of the monastery of that order.

　When he ate, he was not used to the food in the monastery; it was kind of simple food. Sometimes the monks, mostly bachelors, young and didn't know how to cook, so the food was awful. He had to admit it. But then later, as he lived there longer, he tried to accommodate himself and ate without thinking. He ate whatever food was in front of him, and that's how he felt more peaceful within his heart. Then he had really some spiritual elevation, even without initiation, the master or anything like that. Perhaps that's how many secret Catholic or Christian orders attained their enlightenment to some degree. So, he had attained sainthood in some degree by surrendering entirely to God and completely accepting whatever fate brought him. Therefore, his mind never wondered about whether it was good or bad, whether to change the habits or the monastery's rules, anything like that. He wrote some very, very good experiences. So, I just mean to tell you that the purity of the heart is very, very important for spiritual practice.