Wait until you find out he was totally blind the last 15ish years of his life _and wrote more during that period than any other_. Scribes would just sit and he

Wait until you find out he was totally blind the last 15ish years of his life _and wrote more during that period than any other_. Scribes would just sit and he would talk while they wrote. He literally died while doing a calculation in this manner dealing with the hot new invention of Ballooning.