Athena's shield

Athena: is an ancient Greek goddess associated with wisdom, handicraft, and warfarewho was later syncretized with the Roman goddess Minerva. Athena was regarded as the patron and protectress of various cities across Greece, particularly the city of Athens, from which she most likely received her name. She's usually shown in art wearing a helmet and holding a spear. Her major symbols include owls, olive trees, snakes, and the Gorgoneion.

Snake: is Athena's sacred animal. This being because, in greek myth it was said when snakes hissed that they were speaking out words of knowledge.