TIL that only 6 U.S presidents had made a conscientious decision to not run for a second term.

https://www.britannica.com/story/have-any-us-presidents-decided-not-to-run-for-a-second-term

https://www.reddit.com/r/todayilearned/comments/165t9qu/til_that_only_6_us_presidents_had_made_a/