Lectures XVI and XVII — Mysticism

Over and over again in these lectures I have raised points and left them open and unfinished until we should have come to the subject of Mysticism. Some of you, I fear, may have smiled as you noted my reiterated postponements. But now the hour has come when mysticism must be faced in good earnest, and those broken threads wound up together. One may say truly, I think, that personal religious experience has its root and centre in mystical states of consciousness; so for us, who in these lectures are treating personal experience as the exclusive subject of our study, such states of consciousness ought to form the vital chapter from which the other chapters get their light. Whether my treatment of mystical states will shed more light or darkness, I do not know, for my own constitution shuts me out from their enjoyment almost entirely, and I can speak of them only at second hand. But though forced to look upon the subject so externally, I will be as objective and receptive as I can; and I think I shall at least succeed in convincing you of the reality of the states in question, and of the paramount importance of their function.

First of all, then, I ask, What does the expression “mystical states of consciousness” mean? How do we part off mystical states from other states?