You Won’t Believe Which US President Tops the IQ Charts — The Rankings Will Shock You!

A true polymath, Jefferson spoke and read several languages, including French, Latin, Italian, Greek, and Spanish (via Monticello).

Jefferson’s intellect spanned politics, philosophy, architecture, agriculture, and science. He authored the Declaration of Independence, served as the first Secretary of State, and designed iconic buildings like Monticello and the Virginia State Capitol (per Poplar Forest).

He also invented tools like the Moldboard Plow and Cipher Wheel, experimented with farming systems, and studied fossils.

He tracked weather for 50 years and is credited with identifying the Megalonyx Jeffersonii.

Jefferson embodied the traits highlighted in Simonton’s presidential intelligence study, like curiosity, inventiveness, and insight (Journal of Intelligence).