When once the inner sense has become keen it shows its development first by working through the organs of the senses. The vision becomes clearer, the hearing becomes keener, the sense or touch felt more keenly, sense of taste and smell clearer. Therefore among those who tread the mystic path one finds many who are sensitive, and become more sensitive as they develop spiritually. As the standard of health known by the average person is much beneath the mystical ideal, so to the uninitiated the sensitiveness of a person of mystical temperament may often seem peculiar. At the same time when this sensitiveness is developed by spiritual training, and is under control, it manifests as the first quality in the life of a seer.