William J. Sidis, Jr., was born in 1898. His father was an American psychiatrist. At the age of six months, William knew the English alphabet; he could read and write when he was two. When he was eight years old, young Sidis had completed both elementary and high school. At the age of nine, William entered Harvard University.
As a student at Harvard, Sidis displayed phenomenal knowledge in the field of mathematics, often amazing his professors. He graduated with honors at the age of 16 and became a full professor of mathematics at the university at 19.
The story of William J. Sidis, Jr., unfortunately, does not end happily. The promise of his early years was never fulfilled. At the age of 26, he was found operating an adding machine in a store in New York.
This brilliant ex-genius died a lonely death in 1943 in a hotel room in New York.