Mary Baker Eddy

Mary Baker Eddy is the central founder and theological architect of Christian Science. Born in New England in 1821, she became a public religious figure in the latter half of the nineteenth century when she developed and published a distinctive interpretation of Christianity that culminated in her principal text, Science and Health with Key to the Scriptures (first published 1875). Eddy’s autobiographical account and her followers’ testimonies locate a formative revelatory experience in 1866, when she reported recovery from a serious illness through what she described as discovery of a spiritual law that governs healing. Historians treat that episode as a critical biographical origin, while placing it in the wider context of nineteenth‑century American healing movements and revivalist experience.

Eddy’s authorship shaped the tradition’s doctrinal contours: she set out a metaphysic that identifies God as infinite Spirit and treats sickness and matter as forms of error that spiritual understanding can correct. Her work became canon in the Church of Christ, Scientist and is read alongside the Bible in congregational services. The institutional structures Eddy fashioned include the formal founding of the Church of Christ, Scientist (1879), the establishment of the Mother Church in Boston, and the founding of periodicals and publishing operations to disseminate teachings and testimonies.

Eddy’s role also included developing systems of teaching and licensing. She organized classes to train teachers in Christian Science and instituted procedures for recognizing practitioners who would carry out spiritual treatment. These measures helped to professionalize spiritual healing and to reproduce the movement beyond her immediate circle. Eddy’s prominent place as a female religious leader in the nineteenth century is notable: she exercised organizational authority in a period when women’s leadership in many religious bodies was limited, and her position shaped the movement’s opportunities for women’s participation in leadership and teaching roles.

Her life and work attracted both praise and controversy. Admirers lauded reported healings and the intellectual coherence of her metaphysical system; critics challenged theological claims and raised concerns about the movement’s stance toward medical care. Legal disputes and public controversies arose at various times as a consequence of the movement’s teaching on healing. After her death in 1910, debates about interpretation and institutional authority continued to revolve around her texts and the administrative structures she put in place.

In the scholarly literature, Mary Baker Eddy is treated both as a historical founder whose ideas can be analyzed in the context of American religious innovation and as a canonical figure whose writings continue to be authoritative within Christian Science. Her legacy is visible in the enduring presence of Science and Health in worship and study, in the institutional life of the Church of Christ, Scientist, and in the public footprint of initiatives she founded, such as The Christian Science Monitor. Eddy’s life thus exemplifies the complex interplay of personal religious experience, textual production, and institutional formation that characterizes many modern religious movements.