George Berkeley (1732). “Alciphron: Or, The Minute Philosopher. In Seven Dialogues. Containing an Apology for the Christian Religion Against Those who are Called Free-thinkers ...”, p.216
Doug Pagitt (2012). “A Christianity Worth Believing: Hope-filled, Open-armed, Alive-and-well Faith for the Left Out, Left Behind, and Let Down in us All”, p.85, John Wiley & Sons