The answer to this question brings into bold relief a vital difference between orthodox mystics and those here called nature-mystics, and raises the issue on which the very existence of a valid Nature Mysticism must depend. The stricter schools would unhesitatingly refuse to accord to such experiences the right to rank with those which result in true insight. Why? Because they obviously rest on sense impressions. An English mystic, for example, states in a recent article that Mysticism is always and necessarily extra-phenomenal, and that the man who tries to elucidate the visible by means of the invisible is no true mystic; still less, of course, the man who tries to elucidate the invisible by means of the visible. The true mystic, he says, fixes his eyes on eternity and the infinite; he loses himself when he becomes entangled in the things of time, that is, in the phenomenal. Still more explicit is the statement of a famous modern Yogi. "This world is a delusive charm of the great magician called Maya. . . . Maya has imagined infinite illusions called the different things in the universe. . . . The minds which have not attained to the Highest, and are a prey to natural beauties in the stage of Maya, will continually have to turn into various forms, from one to another, because nothing in the stage of Maya is stable." Nor would the Christian mystics allow of any intermediaries between the soul and God; they most of them held that the soul must rise above the things of sense, mount into another sphere, and be "alone with the Alone." What, then, is the concept of the ultimately Real which these stricter mystics have evolved and are prepared to defend? It is that of pure and unconditioned Being--the One--the Absolute. By a ruthless process of abstraction they have abjured the world of sense to vow allegiance to a mode of being of which nothing can be said without denying it. For even to allow a shadow of finiteness in the Absolute is to negate it; to define it is to annihilate it! It swallows up all conditions and relations without becoming any more knowable; it embraces everything and remains a pure negation. It lies totally and eternally beyond the reach of man's faculties and yet demands his perfect and unreasoning surrender. A concept, this, born of the brains of logical Don Quixotes.