" The best way to explain in modern terms what a deity is, is to understand deity as a unique vortex of energy. Sometimes that energy vortex takes recognizable anthropomorphic form (for instance, in meditation visions). Sometimes that energy is felt through the sound vibrations, called mantra, or through the geometric pictures, called yantras, that map the way that energy looks in “blueprint” form. "

― Sally Kempton , Awakening Shakti: The Transformative Power of the Goddesses of Yoga