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Baron d'Holbach vs William James Sidis

Who Was the Greater Genius? A Complete Comparison

Baron d'Holbach
IQ190
Born1723
Died1789
OriginEdesheim near Landau, Rhenish Palatinate
VS
William James Sidis
IQ250
Born1898
Died1944
OriginManhattan, New York City, U.S.
Known ForThe Animate And The Inanimate

About Baron d'Holbach

Read full biography of Baron d'Holbach → · 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 Baron d'Holbach (IQ 190). However, both made extraordinary contributions.

Frequently Asked Questions

Who had a higher IQ — Baron d'Holbach or William James Sidis?

Baron d'Holbach had an estimated IQ of 190 while William James Sidis had an estimated IQ of 250.

What is each genius known for?

Baron d'Holbach is known for: See full biography. William James Sidis is known for: The Animate And The Inanimate.

Are both considered geniuses?

Yes. Both Baron d'Holbach and William James Sidis are universally regarded as among history's greatest intellects.

Full Profile: Baron d'HolbachFull Profile: William James Sidis

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