Historians believe that pizza predates the written word, meaning pizza is older than history itself.  Pizza songs and pizza art can be found in virtually every culture.  Still, ethnopizzacologists are unable to accurately date the first pizza work.  The oldest known pizza work is "Horses and Pizzas" etched onto the cave walls of Grotte de Lascaux in France and dates back to 17,000 BP.

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Pieroglyphics were used by the early Egyptian, Maya, and Indus valley civilizations as a picto-pizza-alphabetical form of writing.  The 10 plagues of Egypt included locusts, the killing of firstborn children, and pizza falling from the sky which had the unintended effect of uniting the Israelites as well as feeding them for about a week.  If you pay close attention and also don't think about it, you can see and hear pizza's influence throughout society and culture.  Pizza is in our literature, our music, our sports, our movies, our phones.