(3) A third danger follows from this: the marked tendency to underestimate the historical. The justifiable element here is, again, the emphasis on personal conviction and faith; the unjustifiable element is the tendency toward the greatest one-sidedness, and toward emptiness, especially of ethical content. Advising our young people simply to "listen to God," without the strongest insistence upon the historical revelation of God at the same time, is exposing them to the great danger of mistaking for an indubitable, divine revelation the veriest vagary that may chance in their empty-mindedness next to come into their thought. With the reason in supposed abeyance, the door is thus thrown open to the grossest superstitions. Honest attempts to deepen the religious life may thus become dangerous assaults upon true religion. (4) A fourth danger in mysticism is so strong a tendency toward vagueness, that the common mind is not without warrant in identifying mysticism and mistiness. The justifiable element here is in the real difficulty of expressing the full content of the entire religious experience; the unjustifiable element is, once more, the slighting of the historical, the ethical, and the rational, especially in talking much of the contradictions of reason, and of what is above reason. Mysticism naturally lacks positive content. (5) Another danger--the tendency toward pantheism--comes in partly, as Herrmann has suggested, as a meeting of this lack of content, and partly as the logical outcome of such an insistence upon losing oneself in God as amounts to a being swept out of one's self--a loss of clear and rational self-consciousness, which is next interpreted speculatively as a real absorption in God, and is then made the goal. This is the familiar road of Indian and neo-platonic mysticism, and its phenomena are real enough, but probably of only the slightest religious significance. Tennyson tells somewhere of the immense sense of illumination that came to him once from simply repeating monotonously his own name--"Alfred Tennyson, Alfred Tennyson." This may be as effective as looking at the end of one's nose and ceaselessly reiterating "Om," as does the Hindu ascetic. A still shorter and more certain method is through nitrous-oxide-gas intoxication, of which Professor James says: "With me, as with every other person of whom I have heard, the key-note of the experience is the tremendously exciting sense of an intense metaphysical illumination. Truth lies open to the view in depth beneath depth of almost blinding evidence. The mind sees all the logical relations of being with an apparent subtlety and instantaneity, to which its normal consciousness offers no parallel; only as sobriety returns, the feeling of insight fades, and one is left staring vacantly at a few disjointed words and phrases as one stares at a cadaverous-looking snow-peak from which the sunset glow has just fled, or at the black