Pray go back and recollect one of the conclusions to which I sought to lead you in my very first lecture. You may remember how I there argued against the notion that the worth of a thing can be decided by its origin. Our spiritual judgment, I said, our opinion of the significance and value of a human event or condition, must be decided on empirical grounds exclusively. If the fruits for life of the state of conversion are good, we ought to idealize and venerate it, even though it be a piece of natural psychology; if not, we ought to make short work of it, no matter what supernatural being may have infused it.

Lecture IX, "Conversion, concluded" - The Varieties of Religious Experience (1902)