I was nauseous and tingly all over. I was either in love or I had smallpox.
— Woody Allen

My general theory since 1971 has been that the word is literally a virus, and that it has not been recognized as such because it has achieved a state of relatively stable symbiosis with its human host; that is to say, the word virus (the other Half) has established itself so firmly as an accepted part of the human organism that it can now sneer at gangster viruses like smallpox and turn them in to the Pasteur Institute.
William S. Burroughs smallpox quote

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.
— Edward Jenner

Most of the trouble in this world has been caused by folks who can't mind their own business, because they have no business of their own to mind, any more than a smallpox virus has.
— William S. Burroughs

Smallpox was the worst disease in history. It killed more people than all the wars in history.
— smallpox quotation by Larry Brilliant