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Henry Adams vs William James Sidis

Who Was the Greater Genius? A Complete Comparison

Henry Adams
IQ195
Born1838
Died1918
OriginBoston, Massachusetts
Known ForThe Education of Henry Adams, The History of the United States of America 1801–1
VS
William James Sidis
IQ250
Born1898
Died1944
OriginManhattan, New York City, U.S.
Known ForThe Animate And The Inanimate

About Henry Adams

American historian and member of the Adams political family, descended from two U.S. Presidents

Read full biography of Henry Adams → · In-Depth Article →

About William James Sidis

American child prodigy

Read full biography of William James Sidis → · In-Depth Article →

The Verdict

Based on estimated IQ scores, William James Sidis (IQ 250) ranks higher than Henry Adams (IQ 195). However, both made extraordinary contributions.

Frequently Asked Questions

Who had a higher IQ — Henry Adams or William James Sidis?

Henry Adams had an estimated IQ of 195 while William James Sidis had an estimated IQ of 250.

What is each genius known for?

Henry Adams is known for: The Education of Henry Adams, The History of the United States of America 1801–1817. William James Sidis is known for: The Animate And The Inanimate.

Are both considered geniuses?

Yes. Both Henry Adams and William James Sidis are universally regarded as among history's greatest intellects.

Full Profile: Henry AdamsFull Profile: William James Sidis

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