WHILE I was beseeching Our Lord to-day that He would speak through me, since I could find nothing to say and had no idea how to begin to carry out the obligation laid upon me by obedience, a thought occurred to me which I will now set down, in order to have some foundation on which to build. I began to think of the soul as if it were a castle made of a single diamond or of very clear crystal, in which there are many rooms, just as in Heaven there are many mansions. Thus begins Teresa of Avila's Interior Castle, one of the most celebrated books ever written by a mystic on abiding in union with Christ. Writing in obedience to the requests of two of her superiors, the humble 16th century Spanish sister protests for the love of God, let me get on with my spinning and go to choir?like the other sisters?I am not meant for writing; I have neither the health nor the wits for it.? However, in her pre-coffee-house conversational style, Teresa of Avila charmingly proves to her readers that she does have the wits for conveying that ?the most essential thing is that we should love God? as she takes us by the hand and lead us on a visually beautiful spiritual journey into the soul, that Interior Castle where Christ abides, and where we may abide with Him in holy, intimate communion.