A Canadian Roman Catholic priest of the Missionary Oblates of Mary Immaculate, Ronald Rolheiser is a theologian, columnist, and author whose works speak to contemporary seekers. His best-known book, The Holy Longing (1999), frames spirituality as “what we do with our desire.” Other significant works include Sacred Fire (2014) and The Restless Heart (2004). Rolheiser views human longing and restlessness as the core of spiritual life, directing us either toward fragmentation or holiness. His philosophy integrates Christian tradition with an honest engagement with human desire, sexuality, community, and social justice, presenting spirituality as a path of channeled energy—restlessness transformed into love and communion.