An American Philosophical Society member for 35 yrs, Thomas Jefferson was the 1st scientist US President

In this 1799 letter, Thomas Jefferson said "despotism had overwhelmed the world for thousands & thousands of years" but "science can never be retrograde; what is once acquired of real knowledge can never be lost."

In this 1809 letter dated two days before ending his Presidency, Thomas Jefferson said he felt like being released from prison, and that he should've been a scientist

Scientist-President Thomas Jefferson discovered large bones that were initially thought to be from a large cat-like predator, but it was later determined to be from a giant sloth

Perhaps our first scientist-President, Thomas Jefferson in 1784 discussed air travel via balloons, 9 years before Jean Pierre Blanchard flew over Philadelphia in January 9, 1793