This article is the text of a Plenary Session lecture presented at the World Congress of Philosophy, Rome, 2024. In it I argue that archaeological evidence shows that the first written philosophy originated not in Greece, India, or China as is commonly believed, but, in Sumer, Mesopotamia, approximately 2600 BCE. The author, En Hedu’Anna, was a woman. I describe four writings by her, distinguish her views from then-prevailing Mesopotamian views about a variety of philosophic concepts and topics. I discuss her contributions to cosmology, scientific method, philosophy of religion, and principles of justice, amongst others. I relate her views on the just treatment of prisoners of war, transgenderism, and other seemingly contemporary philosophical issues. Lastly, I summarize evidence for what today would be called her Curriculum Vitae and her Impact Factor.