author
Dougan Clark
1828–1896
A 19th-century Quaker minister, physician, and religious writer, he explored holiness, sanctification, and the work of the Holy Spirit in clear, practical terms. His books reflect both pastoral concern and a teacher’s instinct for making theology understandable.
1 Audiobook
The Theology of Holiness
by Dougan Clark
About the author
Born in 1828 and died in 1896, Dougan Clark was an American Quaker minister and author associated with Richmond, Indiana. He was the son of Dougan and Asenath Clark, who were both ministers in the Friends Church, and he was educated for the medical profession before turning more fully toward ministry and religious teaching.
Clark served as a professor of systematic theology and church history at Earlham College. His best-known works include The Theology of Holiness, The Offices of the Holy Spirit, and David B. Updegraff and His Work. Across these writings, he focused on Christian holiness, sanctification, and faithful spiritual living in a way meant to guide ordinary readers as well as serious students.
His writing belongs to the rich tradition of 19th-century devotional and theological literature. Even now, his books offer a window into Quaker and holiness thought in the late 1800s, combining conviction, biblical reflection, and a desire to encourage deeper spiritual life.