In the Westminster Abbey composition, published in "The New Age" in 1910, the characteristics of four personalities are plainly manifest--Coleridge, Milton, Shelley and Shakespeare--and I have not forgotten the sensation caused by this great work in London at the time of its appearance. Having had occasion to study the social and psychic conditions in France, Germany, Italy, Austria and England before the great war, and after having been an eye witness of scenes unique in the annals of musical inspiration in the artistic and literary circles of Europe as well as the most intellectual of the royal courts, in which Mr. Grierson was the central figure, I now have a better understanding of the work he accomplished and its far-reaching import. The more complex the work the longer must be the preparation, and we are now confronted with what will appear to many as the most interesting phase of Mr. Grierson's psychic gifts, for the seer who ushered in the new mystical movement by the publication of "Modern Mysticism" in 1899 is now the recorder of messages which must induce thinking and unprejudiced minds to pause and consider such matters in a new light, and it is to be hoped that many more messages like these may be recorded by the same hand. As I write, I have before me a unique collection of letters written to Mr. Grierson by men and women eminent in philosophy, art, music, literature and journalism, in Europe and America. Among the letters that Mr. Grierson values the most in this remarkable album are eight from members of the French Academy, with Sully Prudhomme, winner of the first Noble Prize, heading the list. Which reminds me that I heard him say one evening in Paris, after hearing Mr. Grierson's music: "You have placed me on the threshold of the other world. There are not words in the French language to express what I have felt tonight!" Up to that moment the famous Academician had been known as an avowed agnostic. Maeterlinck writes that the first Grierson volume (in French) influenced him more than any book he had ever read. There are four letters from the Belgian mystic.