Shulgi also boasted that he was one of the few kings who had gone to school to become a scribe. The Sumerian method of writing, known as cuneiform, consisted of complex wedge-shaped symbols impressed on clay tablets. At the schools that taught this difficult skill, students also learned how to debate in public and practiced the refined art of insulting opponents before refuting their arguments. "He is spawn of a dog , seed of a wolf, a helpless hyena's whelp, and an addlepated mountain monkey whose reasoning is nonsensical!" begins one such preamble. We can only guess whether Shulgi's fellow students dared ridicule their King in this way.