mysticism nor an emotional touch makes religion. They are as often as not concomitants of a pathological state which is the denial of religion. But if mysticism means a personal attitude towards God in which the heart is active as well as the mind, then religion cannot exist without mysticism. When, however, we regard mysticism as what it very often is, as an antithesis to institutional religion and a revolt against authority and forms, then it may seem at first sight paradoxical to recognise the mystic's claim to the hospitality of Judaism. That a religion which produced the Psalter, and not only produced it, but used it with never a break, should be a religion, with intensely spiritual possibilities, and its adherents capable of a vivid sense of the nearness of God, with an ever-felt and never-satisfied longing for communion with Him, is what we should fully expect. But this expectation would rather make us look for an expression on the lines of the 119th Psalm, in which the Law is so markedly associated with freedom and spirituality. Judaism, after all, allowed to authority and Law a supreme place. But the mystic relies on his own intuitions, depends on his personal experiences. Judaism, on the other hand, is a scheme in which personal experiences only count in so far as they are brought into the general fund of the communal experience. But in discussing Judaism it is always imperative to discard all _a priori_ probabilities. Judaism is the great upsetter of the probable. Analyse a tendency of Judaism and predict its logical consequences, and then look in Judaism for consequences quite other than these. Over and over again things are not what they ought to be. The sacrificial system should have destroyed spirituality; in fact, it produced the Psalter, 'the hymnbook of the second Temple.' Pharisaism ought to have led to externalism; in fact, it did not, for somehow excessive scrupulosity in rite and pietistic exercises went hand in hand with simple faith and religious inwardness. So, too, the expression of ethics and religion as Law ought to have suppressed individuality; in fact, it sometimes gave an impulse to each individual to try to impose his own concepts, norms, and acts as a Law upon the rest. Each thought very much for himself, and desired that others should think likewise. We have already seen that in matters of dogma there never was any corporate action at all; in ancient times, as now, it is not possible to pronounce definitely on the dogmatic teachings of Judaism. Though there has been and is a certain consensus of opinion on many matters, yet neither in practice nor in beliefs have the local, the temporal, the personal elements ever been negligible. In order to expound or define a tenet or rite of Judaism it is mostly necessary to go into questions of time and place and person. Perhaps, then, we ought to be prepared to find, as in point of fact we do find, within the main body of Judaism, and not merely as a freak of occasional eccentrics, distinct mystical tendencies. These tendencies have often been active well inside the sphere of the Law. Mysticism was, as we shall see, sometimes a revolt against Law; but it was often, in Judaism as in the Roman Catholic Church, the outcome of a sincere and even passionate devotion to authority. Jewish mysticism, in particular, starts as an interpretation of the Scriptures. Certain truths were arrived