I had been to school most all the time, and could spell, and read, and write just a little, and could say the multiplication table up to six times seven is thirty-five, and I don’t reckon I could ever get any further than that if I was to live forever. I don’t take no stock in mathematics, anyway.

– Mark Twain

The Adventures of Huckleberry Finn, Chapter 4. Huck is academically uneducated, but he turns out to be a very street smart kid.