Inspired by her vision of the soul as a diamond in the shape of a castle containing seven mansions, St. Teresa interpreted this vision as a journey of faith through seven stages, ending with union with God. The Interior Castle is widely considered to be one of the greatest works on spiritual development, and continues to attract new generations to the visions of St. Teresa of Avila.

Valiente obra de Santa Teresa sobre el Cantar de los Cantares, cuando en el siglo XVI no estaba permitido publicar o leer la sagrada Escritura en lengua romance. Pensado originalmente como guia para jovenes chicas a traves del Cantar de los Cantares. Brave work of St Teresa of Avila (declared as doctor of the church). A guide to read the bible book "Song of Songs""