Jonas Salk
He cured polio and then gave away the cure to the world for free. That’s the mark of a truly selfless person.
I am old enough to have had friends with polio. I still remember getting the vaccine. I still bear the scar. In 1961, we were all given a further dose (the Sabin Vaccine) on a sugar cube in class at our elementary school.
Story credit – Reddit/Sphaeropterous