Edward Jenner

“The deviation of man from the state in which he was originally placed by nature seems to have proved to him a prolific source of diseases.”

“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.”

“The joy I felt at the prospect before me of being the instrument destined to take away from the world one of its greatest calamities was so excessive that I found myself in a kind of reverie.”

“I am not surprised that men are thankful to me; I am surprised that they are not more thankful.”