William James Sidis
William James Sidis (; April 1, 1898 – July 17, 1944) was an American child prodigy whose exceptional abilities in mathematics and languages made him one of the most famous intellectual prodigies of the early 20th century. Born to Boris Sidis, a prominent psychiatrist, and Sarah Mandelbaum Sidis, a physician, Sidis demonstrated extraordinary intellectual capabilities from infancy.