Sr. Theresa Aletheia Noble, FSP, is a former atheist who is now a religious sister with the Daughters of Saint Paul. She is the author of several books on memento mori, the Christian practice of meditating on one’s death to prepare for heaven. Her most recent project is a prayer book, Memento Mori: Prayers on the Last Things. You can find out more about her work at pursuedbytruth.com.