Thoth

The Egyptians believed that a god named Thoth led the souls of the dead to "a green hill of everlasting life and eternal wisdom." Later, the Romans based their god Mercury on Thoth, and the planet Mercury was in turn based on the god. "green is sometimes said to be the color of the planet Mercury, which is the planet governing the mind and conferring knowledge not only of the kind essential to material success but also inspirational knowledge and celestial wisdom," Conroy wrote...