Richard J. Foster (DThP, Fuller Theological Seminary) is founder of Renovaré. He is the author of several books, including Streams of Living Water, Prayer, Freedom of Simplicity, Sanctuary of the Soul, and Celebration of Discipline, which has sold over two million copies worldwide; he is coauthor (with Gayle Beebe) of Longing for God. He and his wife, Carolynn, make their home near Denver, Colorado.