«Short Method of Prayer & Spiritual Torrents» by Jeanne Marie Bouvieres de la Motte Guyon

Jeanne-Marie Bouvier de la Motte-Guyon (commonly known as Madame Guyon) was a French mystic and one of the key advocates of Quietism. Quietism was considered heretical by the Roman Catholic Church, and she was imprisoned from 1695 to 1703 after publishing a book on the topic, A Short and Easy Method of Prayer. Guyon believed that one should pray all the time, and that in whatever one does, one should be spending time with God.