William James, The Varieties of Religious Experience (1902)
“ There is not one grace of the Spirit of God, of the existence of which, in any professor of religion, Christian practice is not the most decisive evidence.... The degree in which our experience is productive of practice shows the degree in which our experience is spiritual and divine.” Catholic writers are equally emphatic. The good dispositions which a vision, or voice, or other apparent heavenly favor leave behind them are the only marks by which we may be sure they are not possible deceptions of the tempter. ”
