(5) And everything that has happened and is happening in the world of psychological and philosophical research, in the world of historico-critical investigation into the past history and modalities of religion, and in the world of our own present religious experience and requirements, has but brought to light fresh facts, forces, and connections, in proof both of the right and irreplaceableness of the Mystical element in life and religion, and of the reality and constant presence of these its two dangers. For, as to these dangers, we now know, with extraordinary clearness and certainty, how necessary, constant and far-reaching is, on its phenomenal surface, the auto-suggestive, mono-ideistic power and mechanism of the mind; yet how easily, in some states, too much can be made of such vivid apprehensions and quasi-sensible imagings of invisible reality,--things admirable as means, ruinous as ends. And we also know, with an astonishing universality of application, how great a multiplicity in unity is necessarily presented by every concrete object and by every mental act and emotional state of every sane human being throughout every moment of his waking life; and how this unity is actually constituted and measured by the multiplicity of the materials and by the degree of their harmonization.--Hence, not the absence of the Mystical element, but the presence both of it and of the other constituents of religion, will turn out to be the safeguard of our deepest life and of its sanity, a sanity which demands a balanced fulness of the soul’s three fundamental pairs of activities: sensible perception and picturing memory; reflection, speculative and analytic; and emotion and volition, all issuing in interior and exterior acts, and these latter, again, providing so much fresh material and occasions for renewed action and for a growing unification in an increasing variety, on and on. The metaphysical and faith questions, necessarily raised by the phenomenal facts and mechanisms here considered, but which cannot be answered at this level, will be discussed in a later chapter. Here we can but once more point out, in conclusion, that no amount of admitted or demonstrated auto-suggestion or mono-ideism in the phenomenal reaches and mechanism of the mind decides, of itself, anything whatsoever about, and still less against, the objective truth and spiritual value of the ultimate causes, dominant ideas, and final results of the process; nor as to whether and how far the whole great movement is, at bottom, occasioned and directed by the Supreme Spirit, God, working, in and through man, towards man’s apprehension and manifestation of Himself.[60] CHAPTER X THE MAIN LITERARY SOURCES OF CATHERINE’S CONCEPTIONS INTRODUCTORY. 1. _The main literary sources of Catherine’s teaching are four._