Dr. de Lange was an outstanding teacher, practitioner and lecturer for many years. A native of the Netherlands, he was educated at the University of Leyden, where he studied law and received his doctoral degree in 1912. He entered the public practice of Christian Science in 1921.
After becoming a U.S. citizen, he became a teacher of Christian Science in 1935. He also served on the Christian Science Board of Lectureship for 22 years. He was a student and close friend of Bicknell Young.
John Hargreaves wrote to a friend, “[de Lange’s] was the purest teaching, and I have known queues for his lectures in London’s biggest churches to stretch three times round a block an hour before the doors opened. You can’t go wrong with these books.”