" separation of church and state does not result in the church continuing to apply itself to its own task; it is no guarantee against secularization. Nowhere is the church more secularized than where it is separated in principle as it is here. This very separation can create an opposition, so that the church engages much more strongly in political and secular things. "

― Eric Metaxas , Bonhoeffer: Pastor, Martyr, Prophet, Spy