Sri Aurobindo
Letters of Sri Aurobindo
9. Fate and Free-Will, Karma and Heredity, etc
I don’t know whether I can throw any positive light on X’s mystic experiences. The description, at any rate the latter part is not very easy to follow as it is very allusive in its expressions and not always precise enough to be clear. The first part of the experience indicates a native power of healing of whose action she herself does not know the process. It seems from her account to come from something in herself which should be from the terms she uses a larger and higher and brighter and more powerful consciousness with which she is in occasional communion but in which she does not constantly live. On the other hand another sentence seems to point to a Godhead or Divine Presence giving commands to her to guide others so that they might grow in consciousness. But she distinctly speaks of it as a greater “me” standing behind a blue diamond force. We must fall back then on the idea of a greater consciousness very high up with a feeling of divinity, a sense of considerable light and spiritual 
authority – perhaps in one of those higher spiritual mental planes of which I speak in The Life Divine and the Letters. The diamond light could well be native to these planes; it is usually white, but there it might well be blue; it is a light that dispels or drives away all impure things, especially a demoniac possession or the influence of some evil force. Evidently, the use of a power like this should be carefully guarded from the intrusion of any wrong element such as personal love of power, but that need not cause any apprehension as a keen inlook into oneself would be sufficient to reject it or keep it aloof. I think that is all I can say upon the data given in her letter.