John Hassler Dietrich was a Unitarian minister, born at Chambersburg, Pennsylvania, is called the "Father of Religious Humanism".
Education
He was educated at Franklin and Marshall College and at the Lancaster Theological Seminary in Lancaster, Pennsylvania, ordained in the ministry of the Reformed Church in 1905, and defrocked in 1911 for failing to affirm primary Christian beliefs.
Career
He retired to Berkeley, California, where he died. He is buried in the crypt of First Unitarian Church of Chicago. He was the author of:
The Gain for Religion in Modern Thought (1908)
The Religion of a Sceptic (1911)
Substitutes for the Old Beliefs (1914)
From Stardust to Soul (1916)
The Religion of Evolution (1917)
The Religion of Humanity (1919).