terion the stoutest insisters on supernatural origin have also been forced to use in the end. Among the visions and messages some have always been too patently silly, among the trances and convulsive seizures some have been too fruitless for conduct and character, to pass themselves off as significant, still less as divine. In the history of Christian mysticism the problem how to discriminate between such messages and experiences as were really divine miracles, and such others as the demon in his malice was able to counterfeit, thus making the religious person twofold more the child of hell he was before, has always been a difficult one to solve, needing all the sagacity and experience of the best directors of conscience. In the end it had to come to our empiricist criterion: By their fruits ye shall know them, not by their roots. Jonathan Edwards's Treatise on Religious Affections is an elaborate working out of this thesis. The roots of a man's virtue are inaccessible to us. No appearances whatever are infallible proofs of grace. Our practice is the only sure evidence, even to ourselves, that we are genuinely Christians.
"In forming a judgment of ourselves now," Edwards writes, "we should certainly adopt that evidence which our supreme Judge will chiefly make use of when we come to stand before him at the last day. … 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. Says Saint Teresa:—
