"I shall not, I presume, be thought presumptuous in declaring, that the Cow Pox is the most efficacious, and the most safe, of all the methods that have been yet discovered, for eradicating the Small P…"

"The opposition I have met with has only served to confirm me in my opinion."

"You see by the papers how I'm annoyed by a set of blockheads who write about the imperfection of the cowpox, as a vaccine, without any knowledge scarcely of its phenomena."

"I have often found that the most simple remedies are the most efficacious."

"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."