In the religious traditions of India, a sadhu is a holy man, an ascetic who has renounced the world. In the Jain tradition monks (sadhus) and nuns (sadhvis) are also called munis, literally the “silent” holy ones. Traditionally, they are supposed to move from village to village, accepting only what food someone offers them along the way. They go by foot, for travel by vehicles is seen to be much more damaging to the multitude of tiny life-forms. During the four months of the monsoon season, the monks and nuns settle down in various villages in order to avoid harming the many organisms that emerge in the rain. It is especially during this time that they perform various services, such as teaching, for the lay community.