Free PDF: The Genius Workout — 50 brain teasers + the 25 highest IQs in history.

Pierre-Simon Laplace vs William James Sidis

Who Was the Greater Genius? A Complete Comparison

Pierre-Simon Laplace
IQ195
Born1749
Died1827
OriginBeaumont-en-Auge, Normandy, Kingdom of France
Known ForPredicting the existence of black holes
VS
William James Sidis
IQ250
Born1898
Died1944
OriginManhattan, New York City, U.S.
Known ForThe Animate And The Inanimate

About Pierre-Simon Laplace

A French scholar and polymath whose work was important to the development of engineering, mathematics, statistics, physics, astronomy, and philosophy.

Read full biography of Pierre-Simon Laplace → · 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 Pierre-Simon Laplace (IQ 195). However, both made extraordinary contributions.

Frequently Asked Questions

Who had a higher IQ — Pierre-Simon Laplace or William James Sidis?

Pierre-Simon Laplace had an estimated IQ of 195 while William James Sidis had an estimated IQ of 250.

What is each genius known for?

Pierre-Simon Laplace is known for: Predicting the existence of black holes. William James Sidis is known for: The Animate And The Inanimate.

Are both considered geniuses?

Yes. Both Pierre-Simon Laplace and William James Sidis are universally regarded as among history's greatest intellects.

Full Profile: Pierre-Simon LaplaceFull Profile: William James Sidis

← Browse all genius comparisons | IQ Rankings

Trending Comparisons

Albert Einstein vs Isaac NewtonLeonardo Da Vinci vs Nikola TeslaMarie Curie vs Stephen HawkingAda Lovelace vs Alan TuringBobby Fischer vs John Von Neumann

Top IQ Rankings

Highest IQ in HistorySmartest People Alive TodayHighest IQ Child ProdigiesGreatest PhysicistsGreatest Mathematicians

Child prodigies

Gregory SmithMacaulay CulkinRay UshikuboWilliam Maillis
Child prodigies →Highest IQ child prodigies →

Play & come back tomorrow

🔥 Daily Genius Challenge · Genius trivia
Who cracked the Enigma code and helped found computer science?
🧠 Which Genius Are You?📊 Free IQ Test