Test you IQ here

Born a child prodigy in the late 19th century, William James Sidis had an estimated IQ of 250 to 300. But his intelligence couldn't save him from his demons.

When William James Sidis was just 18 months old, he was able to read The New York Times.

By the time he was 6 years old, he could speak in multiple languages, including English, French, German, Russian, Hebrew, Turkish, and Armenian.

As if that wasn’t impressive enough, Sidis also invented his own language as a child (though it’s unclear if he ever used it as an adult). The ambitious youngster also wrote poetry, a novel, and even a constitution for a potential utopia.

Sidis was accepted to Harvard University at the humble age of 9. However, the school wouldn’t allow him to attend classes until he was 11.

While he was still a student in 1910, he lectured the Harvard Mathematical Club on the incredibly complex topic of four-dimensional bodies. The lecture was nearly incomprehensible for most people, but for those who understood it, the lesson was a revelation.

Sidis graduated from the legendary school in 1914. He was 16 years old.

Much speculation has been made over the years about William Sidis’ IQ. Any records of his IQ testing have been lost to time, so modern-day historians are forced to estimate.

For context, 100 is considered an average IQ score, while below 70 is often viewed as substandard. Anything above 130 is considered gifted or very advanced.

Some historical IQs that have been reverse-analyzed include Albert Einstein with 160, Leonardo da Vinci with 180, and Isaac Newton with 190.

As for William James Sidis, he had an estimated IQ of around 250 to 300.