Mary, Masterpiece of the Holy Spirit

Part Three of the Compendium of the Catechism of the Catholic Church, begins with this title and picture:

El Greco, Saint John Contemplates the Immaculate Conception, Church of Saint Leocadia and Saint Roman; Museum of Santa Cruz, Toledo. 

The commentary on this picture in the Compendium was illuminating to me.  Click the hyperlink to read more on how Mary is our teacher and guide for living in the Spirit.