smallpox

The real heroes anyway aren't the people doing things; the real heroes are the people NOTICING things, paying attention. The guy who invented the smallpox vaccine didn't actually invent anything. He just noticed that people with cowpox didn't get smallpox.

I attained a triumph so complete that it is now rare to meet an American with marks of small pox on his face... Benefits are valuable according to their duration and extent... but the benign remedy Vaccination saves millions of lives every century, like the [gift] of the sun, universal and everla