On multiple occasions, in his autobiography and in his address at the Mildmay Park Conference in London in 1869, he mentions how his work as a doctor served as an asset to his religious mission.
In seiner Autobiographie und in seiner Ansprache auf der Mildmay Park Conference in London 1869 erwähnt er mehrfach, wie seine Arbeit als Arzt seiner religiösen Mission zugutekam.