Ascension Codes of the Cathars

What if the holy grail was a metaphor for the human soul going through the holy rite of ascension? William Henry explores many of the strange symbols and works of art used the by the Cathars to conceal the secret of ascension, including the Holy Grail, Ark of the Covenant, and Chintamani stone. What started with the ascension of Isaiah, in biblical times, culminated in a spiritual movement that stood against many of the medieval ruling powers in Europe. Surprisingly, many of these secret teachings were hidden in mysterious images painted by Hieronymus Bosch.