I missed the opportunity to use this quote from Bonhoeffer in my dissertation… he was 28 years old at the time:
"The future of the church does not depend on youth but only on Jesus Christ. The task of young people is not reorganization of the church but listening to God's Word; the church's task is not the conquest of young people, but the teaching of the Gospel."
– Quoted from Dean, Kendra Creasy, Practicing Passion: Youth and the Quest for a Passionate Church (Grand Rapids, MI: Eerdmans, 2004), 26. Cited reference – Dietrich Bonhoeffer, Gesammelte Schriften, Band 3 (Muich: Chr. Kaiser Verlag, 1960), 292-93.