It is now more than ten years since I met, for the last time, Michael Robartes, and for the first time and the last time his friends and fellow students; and witnessed his and their tragic end, and endured those strange experiences, which have changed me so that my writings have grown less popular and less intelligible, and driven me almost to the verge of taking the habit of St. Dominic. I had just published Rosa Alchemica, a little work on the Alchemists, somewhat in the manner of Sir Thomas Browne, and had received many letters from believers in the arcane sciences, upbraiding what they called my timidity, for they could not believe so evident sympathy but the sympathy of the artist, which is half pity, for everything which has moved men's hearts in any age.