Again, Bergson points out that there is nothing but movement; that the idea of _rest_ is an illusion, produced when we and the thing we are looking at are moving at the same speed, as when two railway trains run side by side in the same direction. Here, once more, may not the mystic sensation of "stillness," of being at one with the central Life, be owing to some change having taken place in the spiritual rhythm of the seer, approximating it to that of the Reality which he is thus enabled to perceive, so that the fretful movement of the individual mind becomes merged in the wider flow of the whole, and both seem to be at rest? Thus, the most recent philosophy throws light on the most ancient mystic teaching, and both point to the conclusion that our normal waking consciousness is but one special type of many other forms of consciousness, by which we are surrounded, but from which we are, most of us, physically and psychically screened. We know that the consciousness of the individual self was a late development in the race; it is at least possible that the attainment of the consciousness that this individual self forms part of a larger Whole, may prove to be yet another step forward in the evolution of the human spirit. If this be so, the mystics would appear to be those who, living with an intensity greater than their fellows, are thus enabled to catch the first gleams of the realisation of a greater self. In any case, it would seem certain, judging from their testimony, that it is possible, by applying a certain stimulus, to gain knowledge of another order of consciousness of a rare and vivifying quality. Those who have attained to this knowledge all record that it must be felt to be understood, but that, so far as words are of use, it is ever of the nature of a reconciliation; of discord blending into harmony, of difference merging into unity. Bibliography NOTE.--The literature on mysticism is growing very large, and the following is only a small selection from the general works on it. In the case of individual writers, references are given only where there might be difficulty about editions. Thus no references are given to the works of Burke, Carlyle, Wordsworth, Shelley, Tennyson, Browning, etc. General Underhill, Evelyn. _Mysticism_, Methuen, 1911. (See the valuable Bibliography of mystical works, pp. 563-585.) _The Mystic Way_, Dent, 1913. Jones, Rufus M. _Studies in Mystical Religion_, Macmillan, 1909. James, William. _The Varieties of Religious Experience_, Longmans Green, 1905. Inge, W. R. _Christian Mysticism_, Methuen, 1899. _Studies of English Mystics_, Murray, 1905. _Light, Life and Love._ Selections from the German mystics. With Introduction. Methuen, 1904. Hügel, Baron F. von. _The Mystical Element in Religion_, 2 vols.. Dent, 1909. Delacroix, H. _Études d'Histoiré et de Psychologie du Mysticisme_, Paris, 1908.