Meet William James Sidis: The Smartest Guy Ever? (2024)

William James Sidis, shown here in his 1914 graduation photo, received his degree from Harvard University at age 16. He qualified for admission when he was 9, but he was not invited to attend until age 11, when faculty thought he would be more mature, biographer Amy Wallace says. Wikimedia Commons hide caption

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Meet William James Sidis: The Smartest Guy Ever? (2)

William James Sidis, shown here in his 1914 graduation photo, received his degree from Harvard University at age 16. He qualified for admission when he was 9, but he was not invited to attend until age 11, when faculty thought he would be more mature, biographer Amy Wallace says.

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Long before the "Tiger Mother" phenomenon, around 1910, a man named Boris Sidis was touting his child-rearing methods.

To those who knew of his son, William James Sidis was quite possibly the smartest man who ever lived.

A Child Prodigy

Born in Boston in 1898, William James Sidis made the headlines in the early 20th century as a child prodigy with an amazing intellect.

His IQ was estimated to be 50 to 100 points higher than Albert Einstein's. He could read the New York Times before he was 2. At age 6, his language repertoire included English, Latin, French, German, Russian, Hebrew, Turkish and Armenian. At age 11, he entered Harvard University as one of the youngest students in the school's history.

But as an adult, he purposefully faded into the shadows, avoiding the public scrutiny that followed him through his early years.

Sidis biographer Amy Wallace tells Weekends on All Things Considered host Guy Raz that he despised media attention. "He became a household name, and he hated it," she says.

Nurturing The Early Years

Sidis' parents were pretty smart, too. His father, Boris, was a famous psychologist, and his mother, Sarah, was a doctor.

Wallace describes them as pushy and aggressive. "They believed that you could make a genius," Wallace says. His mother spent the family's savings on books, maps and other learning tools to encourage their precocious son.

"One thing that was very unusual about [Sidis] compared to other child prodigies [is that] very few prodigies have multiple abilities," Wallace says. As a young boy, Sidis invented his own language and wrote French poetry, a novel and a constitution for a utopia.

Harvard At 11 Years Old

Sidis was accepted to Harvard at age 9, but the school wanted him to wait until he was 11. Five years later, he graduated cum laude.

His Harvard days, however, were not full of happy memories.

"He had been made a laughing stock at Harvard," Wallace says. "He admitted he had never kissed a girl. He was teased and chased, and it was just humiliating. And all he wanted was to be away from academia [and] be a regular working man."

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A Writer In Hiding

After a brief stint as a mathematics professor after graduation, Sidis went into hiding from public scrutiny, moving from city to city, job to job, often using an alias.

All the while, he wrote a number of books, including a 1,200-page history of the United States and a book on streetcar transfer tickets, which he loved to collect. His books were never widely published, and he used at least eight pseudonyms.

"We probably will never know how many books he published under false names," Wallace says.

Recently, an inscribed copy of a book he wrote in 1925 — The Animate and the Inanimate — was sold in London to an anonymous collector for 5,000 pounds — almost $8,000.

Exposed By The New Yorker

Sidis lived successfully out of the limelight until 1937, when the New Yorker magazine sent a female reporter to befriend him and gather information for an article on what had happened to the boy wonder.

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According to Wallace, Sidis thought the article's description of him was humiliating and "made him sound crazy." After the article was published, "Sidis decided to come out of the woodwork and out of hiding, and sued the New Yorker," Wallace says.

Sidis argued in court that the magazine had libeled him, and he won. Shortly afterward, in 1944, he died from a brain hemorrhage. He was 46.

Despite his unhappy childhood and the media scrutiny he endured as a child prodigy, Wallace thinks Sidis led a happier life as an adult.

"People who knew him adored him," Wallace says. "So I think he really went from being completely traumatized as a young boy to becoming a happy man."

Meet William James Sidis: The Smartest Guy Ever? (2024)

FAQs

Did William James Sidis actually take an IQ test? ›

Helena may have falsely stated that the Civil Service exam William took in 1933 was an IQ test and that his ranking of 254 was an IQ score of 254. It is speculated that the number "254" was actually William's placement on the list after he passed the Civil Service exam, as he wrote in a letter to his family.

Who got into Harvard at 11? ›

Young Sidis could read at 18 months. He'd written four books and was fluent in eight languages before he was eight. He gave a Harvard seminar on the fourth dimension at nine. He entered Harvard at eleven.

Why is William James Sidis the smartest person in the world? ›

His IQ was estimated to be 50 to 100 points higher than Albert Einstein's. He could read the New York Times before he was 2. At age 6, his language repertoire included English, Latin, French, German, Russian, Hebrew, Turkish and Armenian.

Who was the boy with an IQ of 300? ›

According to some, that would be William James Sidis (1898-1944), with an IQ estimated between 250 and 300. A true child prodigy, Sidis could read English by the time he was two and could write in French by age four.

What is Elon Musk's IQ? ›

Let's first answer the critical question — Elon Musk's IQ is around 155. For context, it is believed that Albert Einstein had an IQ between 160 to 165. As such, Elon is way more brilliant than the average person.

What is the top 1% IQ? ›

An average person scores 100 on an IQ test using the Stanford-Binet IQ scale. A score of 137 to 160 is considered the top 1 percent to . 01 percent of all scorers. Frank Lawlis, director of psychological testing for American Mensa, also joined the discussion on The Daily Circuit.

Who has a 400 IQ? ›

It's hard to believe such people exist. Nata-bird wrote: Adragon De Mello (IQ Score: 400)His record was broken in 1994 by another student, but today, De Mello is known to have one of the highest IQ scores in all of human history – an IQ score of 400!

When did Harvard let girls in? ›

In 1893, an alumni proposal reached the Divinity School, requesting that women be allowed to enroll. It took 60 years for the proposal to be granted by the Harvard Corporation, and in 1955, eight women joined the HDS ranks.

Who went to Harvard at 13? ›

Eugenie Carys de Silva is an academic known for being the youngest person to ever graduate from Harvard University. De Silva completed her master's degree in Intelligence Studies at age 13.

Did William Sidis marry? ›

But his answers were strange. In an interview for Boston Herald, Sidis said he was never going to get married. He wasn't interested in women, absolutely not, and wanted to remain in celibacy.

What was Leonardo da Vinci's IQ? ›

Da Vinci, famed painter and theorist, is estimated to have had IQ scores ranging from 180 to 220, according to parade.com.

Who is the highest IQ ever? ›

Marilyn vos Savant (/ˌvɒs səˈvɑːnt/; born Marilyn Mach; August 11, 1946) is an American magazine columnist who has the highest recorded intelligence quotient (IQ) in the Guinness Book of Records, a competitive category the publication has since retired.

How intelligent is Taylor Swift? ›

According to some acclaimed websites, she is said to have an IQ of 160. As a matter of fact, she is listed in the Guinness Book of World Records as the youngest singer ever to sign at age 11.

Who has 1,000 IQ? ›

According to the Guinness Book of World Records, Marilyn vos Savant has the highest IQ ever recorded — but many have tried to challenge that title. Marilyn vos Savant is a New York magazine columnist, businesswoman, playwright, and more.

What president had the highest IQ? ›

Although Harvard graduate John Quincy Adams had the highest estimated IQ (175) of all U.S. leaders, Simonton says America's third commander in chief, Thomas Jefferson (IQ 160), was the real genius with many achievements in different areas. “He's a great writer.

Has anyone ever scored a 300 on an IQ test? ›

1. William James Sidis – IQ Score: Estimated 250-300. Now, let's shine the spotlight on William James Sidis, an American child prodigy born in 1898. His estimated IQ score ranges from an astonishing 250 to 300.

Who has the highest tested IQ in the world? ›

Born on August 11, 1946, Marilyn vos Savant is an American magazine columnist who was honored in the Guinness Book of Records in 1986 for holding the highest IQ ever recorded: 228.

Who has 400 IQ? ›

Nata-bird wrote: Adragon De Mello (IQ Score: 400)His record was broken in 1994 by another student, but today, De Mello is known to have one of the highest IQ scores in all of human history – an IQ score of 400!

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