Pseudo-Dionysius the Areopagite

“ Again, the heat of fire transmits itself chiefly to things that are more receptive, and yielding, and conductive to assimilation to itself; but, as regards repellent opposing substances, either it leaves none, or a very light, trace of its fiery energy; and further, when through substances favourable to its proper action, it comes in contact with things not congenial,--first, it perchance makes things easily changed to heating hot, and through them heats proportionately either water or something else which is not easily heated. ”

“ After the same rule, then, of Nature's well-ordered method, the regulation of all good order, both visible and invisible, manifests supernaturally the brightness of its own gift of Light, in first manifestation to the most exalted Beings, in abundant streams, and through these, the Beings after them partake of the Divine ray. ”

“ And it illuminates the second, severally, through the first; and, if one must speak briefly, it is firstly brought from hiddenness to manifestation through the first powers. This, then, the Theologian was taught by the Angel who was leading him to Light--that purification, and all the supremely Divine operations, illuminating through the first Beings, are distributed to all the rest, according to the relation of each for the deifying participations. Wherefore he reasonably attributed to the Seraphim, after God, the characteristic of purification by fire. ”

“ Section II Some, then, affirm that, according to the definition already given of the mutual relation of all the Minds, the Logion does not name one of the highest around God, as having come for the cleansing of the Theologian, but that some one of the Angels, placed over us as a sacred Minister of the Prophet's cleansing, is called by the same name. ”