“At age seventeen, my dad joined the U.S. Army during the Second World War. He lied about his age, and he weighed all of 128 pounds. I tell people those three pounds made an enormous difference in my life. Because if he had been 125 or less, he wouldn’t have been accepted.
So he went off to war, and never finished high school. But, there’s a very strange kind of relationship between mathematics and my family. My grandfather could neither read nor write. But he could do mathematics and arithmetic, which was of use in a farming community. All the black farmers had to deal with the store owners who were European Americans, and so my grandfather had this special role to play because he could understand the books. And so my grandfather had this facility with math…