The Interior Castle: Study EditionThe Interior Castle is considered St. Teresa of Avilas masterpiece. She wrote this last work in just a few months in 1577, five years before her death. At this point in her life she had been granted the highest mystical graces; this book is the fruit of her lived experience and a deep felt praise of God for it. More than a book, The Interior Castle is a powerful image of the mystery of the human person. It is, in a very real sense, Teresas soul. Using