A collection of essays, sermons, addresses and letters articulates the theology, ethics, and practical methods of Christian Science, blending spiritual metaphysics with guidance for healing and church governance. It ranges from concise epigrams and prefatory reflections to detailed answers to students' questions, public addresses, and pastoral letters, and includes instruction on prayer, mental practice, and moral conduct. The writings emphasize a spiritual cause-and-effect view, a Scriptural interpretation grounded in spiritual law, and the application of those principles to personal reform, communal practice, and the responsibilities of students and congregations.