I hope that some day the practice of producing cowpox in human beings will spread over the world - when that day comes, there will be no more smallpox.
“Love consists in giving without getting in return; in giving what is not owed, what is not due the other. That's why true love is never based, as associations for utility or pleasure are, on a fair exchange.”
“I'm content to stand on tradition. I'm even more content to wipe my feet on it.”