2. _Noetic quality._—Although so similar to states of feeling, mystical states seem to those who experience them to be also states of knowledge. They are states of insight into depths of truth unplumbed by the discursive intellect. They are illuminations, revelations, full of significance and importance, all inarticulate though they remain; and as a rule they carry with them a curious sense of authority for after‐time. These two characters will entitle any state to be called mystical, in the sense in which I use the word. Two other qualities are less sharply marked, but are usually found. These are:— 3. _Transiency._—Mystical states cannot be sustained for long. Except in rare instances, half an hour, or at most an hour or two, seems to be the limit beyond which they fade into the light of common day. Often, when faded, their quality can but imperfectly be reproduced in memory; but when they recur it is recognized; and from one recurrence to another it is susceptible of continuous development in what is felt as inner richness and importance. 4. _Passivity._—Although the oncoming of mystical states may be facilitated by preliminary voluntary operations, as by fixing the attention, or going through certain bodily performances, or in other ways which manuals of mysticism prescribe; yet when the characteristic sort of consciousness once has set in, the mystic feels as if his own will were in abeyance, and indeed sometimes as if he were grasped and held by a superior power. This latter peculiarity connects mystical states with certain definite phenomena of secondary or alternative personality, such as prophetic speech, automatic writing, or the mediumistic trance. When these latter conditions are well pronounced, however, there may be no recollection whatever of the phenomenon, and it may have no significance for the subject’s usual inner life, to which, as it were, it makes a mere interruption. Mystical states, strictly so called, are never merely interruptive. Some memory of their content always remains, and a profound sense of their importance. They modify the inner life of the subject between the times of their recurrence. Sharp divisions in this region are, however, difficult to make, and we find all sorts of gradations and mixtures. These four characteristics are sufficient to mark out a group of states of consciousness peculiar enough to deserve a special name and to call for careful study. Let it then be called the mystical group. ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐