But then there is also the difficulty of method. For if we begin the study of these psycho-physical peculiarities and states by judging them from the temperamental and psychological standpoint, we can hardly escape from treating them, at least for the moment, as self-explanatory, and hence from using these our preliminary conclusions about such neural phenomena as the measure, type, and explanation of and for all such other facts and apprehensions as our further study of the religious mind and experience may bring before us. In this wise, these our psychological conclusions would furnish not only a negative test and positive material, but also the exclusive standard for all further study. And such a procedure, until and unless it were justified in its method, would evidently be nothing but a surreptitious begging of the question.--Yet to begin with the fullest analysis of the elementary and normal phenomena of consciousness and of its implications and inviolable prerequisites, would too readily land us in metaphysics which have themselves to operate in and with those immediate and continuous experiences; and hence these latter experiences, whether normal and healthy, or, as here, unusual and in part _maladif_, must be carefully studied first. We have, however, to guard most cautiously against our allowing this, our preliminary, analysis and description of psycho-physical states from imperceptibly blocking the way to, or occupying the ground of, our ultimate analysis and metaphysical synthesis and explanation. Only this latter will be able, by a final movement from within-outwards, to show the true place and worth of the more or less phenomenal series, passed by us in review on our previous movement from outside-inwards. 6. _Threefold division._