With this view I have uniformly gone on for fifty years, never varying from the doctrine of the Church at all; nor from her discipline, of choice, but of necessity; so, in a course of years, necessity was laid upon me (as I have proved elsewhere) 1) to preach in the open air; 2) to pray extempore; 3) to form societies; 4) to accept of the assistance of lay preachers; and, in a few other instances, to use such means as occurred, to prevent or remove evils that we either felt or feared.
The Journal of John Wesley