Carl Sagan vs Voltaire
Carl Sagan (IQ 130) vs Voltaire (IQ 190). Side-by-side comparison of intellect, achievements, era and cultural impact.
| Born | 1934 | 1694 |
|---|---|---|
| Died | 1996 | 1778 |
| Country | US | FR |
| Estimated IQ | 130 | 190 |
| Best known for | Search for Extra-Terrestrial Intelligence (SETI), Cosmos: A Personal Voyage, The Dragons of Eden, The Demon-Haunted World | The novel Candide |
Who had the higher IQ?
By the most cited estimates, Voltaire tops this matchup with an estimated IQ of 190, a 60-point margin over Carl Sagan (130). IQ estimates for historical figures are reconstructions, not test results — they sit on top of biographical evidence, productivity, and the difficulty of the problems each person solved. Treat the number as a directional signal, not a verdict.
Achievements compared
Carl Sagan is best known for: Search for Extra-Terrestrial Intelligence (SETI), Cosmos: A Personal Voyage, The Dragons of Eden, The Demon-Haunted World Voltaire is best known for: The novel Candide
Recognition. Carl Sagan: Klumpke-Roberts Award (1974)NASA Distinguished Public Service Medal (1977)Pulitzer Prize for General Non-Fiction (1978)Oersted Medal (1990)Carl Sagan Award for Public Understanding of Science (1993)National Academy of Sciences Public Welfare Medal (1994). Voltaire: —.
Different eras, different boards
The two were born roughly 240 years apart (1934 vs 1694), which matters: scientific tools, available knowledge, and intellectual culture compound. Comparing minds across eras is comparing players on different boards.
The verdict
So who was greater? The honest answer: they're not strictly comparable. By raw IQ proxy, Voltaire edges out. By measurable, lasting influence in their respective field, both are anchors of the human record. If you have to pick one to bet civilization on, pick the one working on the problem you care about.