And why is it important? Matthew Fox, Christian theologian explains this succinctly in an Earth Day 2011 article in the Huffington Post:
Deep down, each one of us is a mystic. When we tap into that energy we become alive again and we give birth. From the creativity that we release is born the prophetic vision and work that we all aspire to realize as our gift to the world. We want to serve in whatever capacity we can. Getting in touch with the mystic inside is the beginning of our deep service.