Teresa of Avila's Interior Castle is one of the most celebrated books of Christian mysticism ever written. In this new edition, the classic translation by E. Allison Peers is united with fresh spiritual commentary from Dennis Billy, C.Ss.R., making it the only edition of Interior Castle to provide spiritual nourishment in an accessible form while remaining completely faithful to Teresa's mystical vision.

Remarkably simple in both style and structure, Teresa begins Interior Castle with the vision of the soul as a "castle made of a single diamond...in which there are many rooms, just as in Heaven there are many mansions." Built on this image of the great worth and depth of the soul, Teresa constructs a work of stunning spiritual and psychological wisdom. Dennis Billy breathes fresh air into this timeless work with a spiritually focused commentary that examines Teresa's thought in its historical context and summarizes her teaching in a brief and straightforward manner.

This classic text of Teresa of Avila, joined with the modern spiritual commentary of Dennis Billy, offers a journey of the soul inward through greater self-knowledge and spiritual blessings toward our ultimate goal: union with God.