Bennu is the ancient Egyptian name for the mythological creature we know as Phoenix. This creature symbolizes rebirth through fire. For common sensed people: "What does not kill you makes you stronger". Bennu was also a symbol of time or the passing thereof and with that it stood for growth.
The passing of time, the purging effect of fire of the Phoenix, the teaching aspect of dualism is represented by the illustration on the cover and back. Life starts and ends, in between the discrimination between good & bad, pleasure and pain creates our space to grow. The more we are able to integrate extremes, the more room we have to keep our balance during the growth that life keeps on imposing on us.